—$104.95
The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 1 Degree Adjustment Short version is designed for headtube lenghts between 90 - 115 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 4.4 Material Alloy S.H.I.S Lower ZS56 S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 10.9 Upper Stack Height 6 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006804638
Mpn: ZSZS56L-G1-S-BLK-Bby Wolf Tooth
—$44.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Black S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Performance ZS Upper Headset Headset Upper UPC: 810006803457
Mpn: ZS44U-5MM-BLK-Bby Wolf Tooth
—$64.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Black S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Premium ZS Upper Headset Headset Upper UPC: 812719027595
Mpn: ZS44U-5MM-BLKby Wolf Tooth
—$104.95
The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 1 Degree Adjustment Long version is designed for headtube lengths between 115 - 140 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 4.4 Material Alloy S.H.I.S Lower ZS56 S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 10.9 Upper Stack Height 6 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006804645
Mpn: ZSZS56L-G1-L-BLK-Bby Wolf Tooth
—$54.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Black Crown Race 40 S.H.I.S Lower ZS56 Wolf Tooth Premium ZS Lower Headset Headset Lower UPC: 812719027915
Mpn: ZS56L-40-BLKby Wolf Tooth
—$39.95
Wolf Tooth Premium headsets feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Lower Bearing, includes race Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Crown Race 40 S.H.I.S Lower IS52 Wolf Tooth Premium IS Lower Headset Headset Lower UPC: 812719028301
Mpn: IS52L-40by Wolf Tooth
—$34.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Black Crown Race 40 S.H.I.S Lower ZS56 Wolf Tooth Performance ZS Lower Headset Headset Lower UPC: 810006803549
Mpn: ZS56L-40-BLK-Bby Wolf Tooth
—$34.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Black Crown Race 40 S.H.I.S Lower EC44 Wolf Tooth Performance EC Lower Headset Headset Lower UPC: 810006803174
Mpn: EC44L-40-BLK-Bby Wolf Tooth
—$104.95
The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 2 Degree Adjustment Short version is designed for headtube lenghts between 90 - 115 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 4.5 Material Alloy S.H.I.S Lower ZS56 S.H.I.S Upper EC44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 20.4 Upper Stack Height 15.9 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006805383
Mpn: ECZS56L-G2-S-BLK-Bby Wolf Tooth
—$64.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Blue S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Premium ZS Upper Headset Headset Upper UPC: 812719027618
Mpn: ZS44U-5MM-BLUby Wolf Tooth
—$54.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Black Crown Race 40 S.H.I.S Lower EC44 Wolf Tooth Premium EC Lower Headset Headset Lower UPC: 812719027434
Mpn: EC44L-40-BLKby Wolf Tooth
—$34.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Orange Crown Race 40 S.H.I.S Lower ZS56 Wolf Tooth Performance ZS Lower Headset Headset Lower UPC: 810006803594
Mpn: ZS56L-40-ORG-Bby Wolf Tooth
—$54.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Blue Crown Race 40 S.H.I.S Lower ZS56 Wolf Tooth Premium ZS Lower Headset Headset Lower UPC: 812719027939
Mpn: ZS56L-40-BLUby Wolf Tooth
—$64.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Orange S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Premium ZS Upper Headset Headset Upper UPC: 812719027649
Mpn: ZS44U-5MM-ORGby Wolf Tooth
—$64.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Black S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 15 Wolf Tooth Premium ZS Upper Headset Headset Upper UPC: 812719027670
Mpn: ZS44U-15MM-BLKby Wolf Tooth
—$34.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Blue Crown Race 40 S.H.I.S Lower EC44 Wolf Tooth Performance EC Lower Headset Headset Lower UPC: 810006803228
Mpn: EC44L-40-ORG-Bby Wolf Tooth
—$29.95
Wolf Tooth Performance Headsets feature Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Crown Race 40 S.H.I.S Lower IS52 Wolf Tooth Performance IS Lower Headset Headset Lower UPC: 810006803440
Mpn: IS52L-40-Bby Wolf Tooth
—$34.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Red Crown Race 40 S.H.I.S Lower ZS56 Wolf Tooth Performance ZS Lower Headset Headset Lower UPC: 810006803617
Mpn: ZS56L-40-RED-Bby Wolf Tooth
—$34.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Lower Bearing, includes race Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Blue Crown Race 40 S.H.I.S Lower ZS56 Wolf Tooth Performance ZS Lower Headset Headset Lower UPC: 810006803556
Mpn: ZS56L-40-BLU-Bby Wolf Tooth
—$104.95
The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 2 Degree Adjustment Short version is designed for headtube lenghts between 90 - 115 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 13 Material Alloy S.H.I.S Lower EC44 S.H.I.S Upper EC44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 28.9 Upper Stack Height 15.9 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006805345
Mpn: ECEC44L-G2-S-BLK-Bby Wolf Tooth
—$54.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Blue Crown Race 40 S.H.I.S Lower EC44 Wolf Tooth Premium EC Lower Headset Headset Lower UPC: 812719027458
Mpn: EC44L-40-BLUby Wolf Tooth
—$104.95
The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 1 Degree Adjustment Short version is designed for headtube lenghts between 90 - 115 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 12.5 Material Alloy S.H.I.S Lower EC44 S.H.I.S Upper EC44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 27.8 Upper Stack Height 15.3 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006805260
Mpn: ECEC44L-G1-S-BLK-Bby Wolf Tooth
—$104.95
The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 1 Degree Adjustment Long version is designed for headtube lengths between 115 - 140 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 12.6 Material Alloy S.H.I.S Lower EC49 S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 19.1 Upper Stack Height 6 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006804683
Mpn: ZSEC49L-G1-L-BLK-Bby Wolf Tooth
—$34.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Red Crown Race 40 S.H.I.S Lower EC44 Wolf Tooth Performance EC Lower Headset Headset Lower UPC: 810006803242
Mpn: EC44L-40-RED-Bby Wolf Tooth
—$59.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Black S.H.I.S Upper IS41 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 7 Wolf Tooth Premium IS Upper Headset Headset Upper UPC: 812719028059
Mpn: IS41U-5MM-BLKby Wolf Tooth
—$104.95
The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 2 Degree Adjustment Long version is designed for headtube lengths between 115 - 140 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 4.5 Material Alloy S.H.I.S Lower ZS56 S.H.I.S Upper EC44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 20.4 Upper Stack Height 15.9 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006805376
Mpn: ECZS56L-G2-L-BLK-Bby Wolf Tooth
—$44.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Orange S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Performance ZS Upper Headset Headset Upper UPC: 810006803501
Mpn: ZS44U-5MM-ORG-Bby Wolf Tooth
—$104.95
The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 1 Degree Adjustment Short version is designed for headtube lenghts between 90 - 115 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 12.6 Material Alloy S.H.I.S Lower EC49 S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 19.1 Upper Stack Height 6 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006804676
Mpn: ZSEC49L-G1-S-BLK-Bby Wolf Tooth
—$59.95
Wolf Tooth Precision Headsets for Trek Knock Block are machined in the USA out of aircraft grade aluminum with superior sealing for protection against the elements. Available in a variety of colors to add some style to your bike. These upper headsets are for Trek frames with molded-in internal bearing cups. Designed to work with Trek's Knock Block system The top cap on these headsets have unique raised features that key to Knock Block compatible stems (made by Bontrager If spacers are needed, you will need to use special Knock Block compatible spacers with notch features This product is the upper headset only Lower headsets on bikes with Knock Block do not have any unique features. They are usually IS headsets which are available separately Item Specifications Bearing Type Cartridge Color Black keyword search Trek Knock Block S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 8 Wolf Tooth Knock Block Headset Upper Headset Upper UPC: 810006802689
Mpn: IS41U-8MM-KNOCK-BLKby Wolf Tooth
—$119.90
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Uppers and lowers sold together as a set Enduro stainless steel sealed bearings and O-ring seals prevents water intrusion around steerer tube included on both the upper and lower system Ultralight stem cap with integrated spacer plus an aluminum bolt and a star nut, 6 mm stack height top cover only Lifetime warranty Item Specifications Bearing Type Cartridge Color Olive Crown Race 40 Defined Color Green Material Alloy S.H.I.S Lower ZS56 S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Premium Headset Headsets UPC: 810006808483
Mpn: ZS44U-ZS56L-OLVby Wolf Tooth
—$54.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Black Crown Race 40 S.H.I.S Lower EC49 Wolf Tooth Premium EC Lower Headset Headset Lower UPC: 812719027519
Mpn: EC49L-40-BLKby Wolf Tooth
—$64.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Red S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Premium ZS Upper Headset Headset Upper UPC: 812719027601
Mpn: ZS44U-5MM-REDby Wolf Tooth
—$44.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Blue S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Performance ZS Upper Headset Headset Upper UPC: 810006803464
Mpn: ZS44U-5MM-BLU-Bby Wolf Tooth
—$39.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Black S.H.I.S Upper IS41 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 7 Wolf Tooth Performance IS Upper Headset Headset Upper UPC: 810006803358
Mpn: IS41U-5MM-BLK-Bby Wolf Tooth
—$44.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Red S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Performance ZS Upper Headset Headset Upper UPC: 810006803525
Mpn: ZS44U-5MM-RED-Bby Wolf Tooth
—$64.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Gold S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Premium ZS Upper Headset Headset Upper UPC: 812719027656
Mpn: ZS44U-5MM-GLDby Wolf Tooth
—$54.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Gold Crown Race 40 S.H.I.S Lower EC44 Wolf Tooth Premium EC Lower Headset Headset Lower UPC: 812719027496
Mpn: EC44L-40-GLDby Wolf Tooth
—$104.95
The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 2 Degree Adjustment Short version is designed for headtube lenghts between 90 - 115 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 13 Material Alloy S.H.I.S Lower EC49 S.H.I.S Upper EC44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 28.9 Upper Stack Height 15.9 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006805369
Mpn: ECEC49L-G2-S-BLK-Bby Wolf Tooth
—$104.95
The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 1 Degree Adjustment Long version is designed for headtube lengths between 115 - 140 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 12.5 Material Alloy S.H.I.S Lower EC44 S.H.I.S Upper EC44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 27.8 Upper Stack Height 15.3 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006805253
Mpn: ECEC44L-G1-L-BLK-Bby Wolf Tooth
—$59.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Blue S.H.I.S Upper IS41 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 15 Wolf Tooth Premium IS Upper Headset Headset Upper UPC: 812719028158
Mpn: IS41U-15MM-BLUby Wolf Tooth
—$64.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Black S.H.I.S Upper EC34 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 16 Wolf Tooth Premium EC Upper Headset Headset Upper UPC: 812719027113
Mpn: EC34U-5MM-BLKby Wolf Tooth
—$119.90
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Uppers and lowers sold together as a set Enduro stainless steel sealed bearings and O-ring seals prevents water intrusion around steerer tube included on both the upper and lower system Ultralight stem cap with integrated spacer plus an aluminum bolt and a star nut, 6 mm stack height top cover only Lifetime warranty Item Specifications Bearing Type Cartridge Color Olive Crown Race 40 Defined Color Green Material Alloy S.H.I.S Lower EC44 S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Premium Headset Headsets UPC: 810006808490
Mpn: ZS44U-EC44L-OLVby Wolf Tooth
—$54.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Purple Crown Race 40 S.H.I.S Lower EC44 Wolf Tooth Premium EC Lower Headset Headset Lower UPC: 812719027472
Mpn: EC44L-40-PRPby Wolf Tooth
—$34.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Black Crown Race 40 S.H.I.S Lower EC49 Wolf Tooth Performance EC Lower Headset Headset Lower UPC: 810006803266
Mpn: EC49L-40-BLK-Bby Wolf Tooth
—$34.95
Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price. Black Oxide Bearings are made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Item Specifications Bearing Type Black Oxide Steel Bearing Type Cartridge Color Blue Crown Race 40 S.H.I.S Lower EC44 Wolf Tooth Performance EC Lower Headset Headset Lower UPC: 810006803181
Mpn: EC44L-40-BLU-Bby Wolf Tooth
—$54.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Red Crown Race 40 S.H.I.S Lower EC44 Wolf Tooth Premium EC Lower Headset Headset Lower UPC: 812719027441
Mpn: EC44L-40-REDby Wolf Tooth
—$64.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Purple S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Premium ZS Upper Headset Headset Upper UPC: 812719027632
Mpn: ZS44U-5MM-PRPby Wolf Tooth
—$104.95
The GeoShift Performance Angle Headset allows you to adjust the geometry of your bike by changing the head tube angle, available in 1 or 2 degree options. This unique design lets the bearings sit at an angle to align with the steerer tube, preventing creaking noises commonly found with angle headsets that feature a spherical design. Reduce the head tube angle to make for slacker geometry and added stability on fast descents, or increase the angle using the opposite orientation of the headset, to make for steeper geometry and quicker steering with maximum front wheel traction. 2 Degree Adjustment Long version is designed for headtube lengths between 115 - 140 mm Enduro black oxide coated chromium steel bearing included on both the upper and lower Upper headsets ship with a star nut which can only be used on forks with steel or aluminum steerer tubes. For forks with carbon steerer tubes you will need a compression plug (sold separately) Machined in the USA with lightweight, strong, durable aircraft-grade 6061 aluminum Includes: Upper and lower cups, bearings, crown race, star nut, shims, stem cap with 5mm integrated spacer and bolt Item Specifications Bearing Type Cartridge Color Black Crown Race 40 Defined Color Black Lower Stack Height 13 Material Alloy S.H.I.S Lower EC44 S.H.I.S Upper EC44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Stack Height 28.9 Upper Stack Height 15.9 Wolf Tooth GeoShift Performance Angle Headset Headsets UPC: 810006805338
Mpn: ECEC44L-G2-L-BLK-Bby Wolf Tooth
—$54.95
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat Lifetime warranty Item Specifications Bearing Type Cartridge Bearing Type Stainless Steel Color Green Crown Race 40 S.H.I.S Lower EC49 Wolf Tooth Premium EC Lower Headset Headset Lower UPC: 812719027540
Mpn: EC49L-40-GRNby Wolf Tooth
—$119.90
Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant. A pair of dual-lip seals ride in micro-grooves to keep out water and debris. Uppers and lowers sold together as a set Enduro stainless steel sealed bearings and O-ring seals prevents water intrusion around steerer tube included on both the upper and lower system Ultralight stem cap with integrated spacer plus an aluminum bolt and a star nut, 6 mm stack height top cover only Lifetime warranty Item Specifications Bearing Type Cartridge Color Olive Crown Race 40 Defined Color Green Material Alloy S.H.I.S Lower EC34 S.H.I.S Upper EC34 S.H.I.S. Stem Clamp Diameter 28.6 Threadless Upper Stack Height 6 Wolf Tooth Premium Headset Headsets UPC: 810006808476
Mpn: EC34U-EC34L-OLVby Wolf Tooth
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