—$5.50

The AheadSet Starnut is great for replacing old or broken star nuts. AheadSet Starnuts Headset Small Part UPC: 840226002330

by AheadSet

—$12.99

Cane Creek Crown Races Compatible across 10, 40 and 110 Series headsets and backwards compatible with S and XX Series All crown races feature integral molded seals Cane Creek Crown Races Crown Race UPC: 840226076959

by Cane Creek

—$29.99

40-Series BearingCompatible with 110-, 40-, and 10-Series headsets Item Specifications Bearing I.D. (mm) 41 Bearing O.D. (mm) 52 Bearing Type Cartridge Cartridge Bearing Angle 36x45 Thickness 6.5 Cane Creek 40-Series Headset Bearing UPC: 840226078441

by Cane Creek

—$12.99

Crown races for Cane Creek headsets fit a variety of lowers and crown race seat diameters. Compatible with 52mm lower headset bearings Compatible with 40mm (1-1/2") tapered steerer tubes Durable steel construction Compatible with 10-, 40- and 110-Series headsets and backwards compatible with S and XX Series Integral mold seals keep out the elements Item Specifications Crown Race 40 Cane Creek Crown Races Crown Race UPC: 840226076690

by Cane Creek

—$15.99

Cane Creek Headset Top Sub AssembliesStack height =8mm Cane Creek Top Covers Headset Small Part UPC: 840226077598

by Cane Creek

—$12.99

Crown races for Cane Creek headsets fit a variety of lowers and crown race seat diameters. Compatible with 52mm lower headset bearings Compatible with 30mm (1-1/8") straight steerer tubes Durable steel construction Allows the installation of a straight steerer fork without changing out the headset lower 36x45 Compatible with 10-, 40- and 110-Series headsets and backwards compatible with S and XX Series Integral mold seals keep out the elements Cane Creek Crown Races Crown Race UPC: 840226076676

by Cane Creek

—$17.99

40-Series BearingCompatible with 110-, 40-, and 10-Series headsets Item Specifications Bearing I.D. (mm) 40.1 Bearing O.D. (mm) 52 Bearing Type Cartridge Cartridge Bearing Angle 36x45 Thickness 6.5 Cane Creek 40-Series Headset Bearing UPC: 840226078328

by Cane Creek

—$26.50

ENVE Composites Compression PlugsCarbon top cap Item Specifications Color Black ENVE Composites Compression Plugs Compression Plug UPC: 851705006046

by ENVE Composites

—$29.99

Hellbender bearings have an improved seal structure and are cross compatible with Cane Creek headsets. Item Specifications Bearing I.D. (mm) 30.3 Bearing O.D. (mm) 41 Bearing Type Cartridge Cartridge Bearing Angle 36x45 Thickness 6.5 Cane Creek Hellbender Headset Bearing Headset Bearing UPC: 840226078137

by Cane Creek

—$52.99

Hellbender bearings have an improved seal structure and are cross compatible with Cane Creek headsets. Item Specifications Bearing I.D. (mm) 40.1 Bearing O.D. (mm) 52 Bearing Type Cartridge Cartridge Bearing Angle 36x45 Thickness 6.5 Cane Creek Hellbender Headset Bearing Headset Bearing UPC: 840226078144

by Cane Creek

—$37.50

The Chris King Base Plates (Crown Races) DOES NOT work for DropSet series headsets 44.0mm OD base plate is for headsets produced prior to 4/1995 and have an F designation 40.5mm OD base plate is for headsets produced after 4/1995 and have a B designation Chris King Base Plates (Crown Races) Crown Race UPC: 841529031508

by Chris King

—$23

Whisky's top cap compression plugs are reliable and easy to use. Compatible with most aluminum and carbon 1-1/8" steerer tubes and serve as a direct replacement on Whisky forks. The simple design sheds weight, simplifies installation and offers great support and function. Single-tool set up and adjustment Internal compression easily applies pressure to secure headset during installation Direct replacement for Whisky forks with 1-1/8" steerer tube, and fits most other manufactures as well Item Specifications Color Black Whisky Parts Co. Top Cap Compression Plugs Compression Plug UPC: 708752268364

by Whisky Parts Co.

—$12.50

40-Series BearingCompatible with 110-, 40-, and 10-Series headsets Item Specifications Bearing I.D. (mm) 30.3 Bearing O.D. (mm) 41 Bearing Type Cartridge Cartridge Bearing Angle 36x45 Thickness 6.5 Cane Creek 40-Series Headset Bearing UPC: 840226078304

by Cane Creek

—$35

The Chris King Base Plates (Crown Races) 44.0mm OD base plate is for headsets produced prior to 4/1995 and have an F designation 40.5mm OD base plate is for headsets produced after 4/1995 and have a B designation Headset marked "B" Chris King Base Plates (Crown Races) Crown Race UPC: 841529023053

by Chris King

—$21.99

40-Series BearingCompatible with 110-, 40-, and 10-Series headsets Item Specifications Bearing I.D. (mm) 40.15 Bearing O.D. (mm) 52 Bearing Type Cartridge Cartridge Bearing Angle 45x45 Thickness 7 Cane Creek 40-Series Headset Bearing UPC: 840226078380

by Cane Creek

—$6

Compression ring fits above the upper bearing in a Cane Creek headset to ensure vertical and horizontal compression is optimal.Compatible with 41mm and 42mm OD upper bearings Cane Creek Compression Ring Headset Small Part UPC: 840226093352

by Cane Creek

—$35

The Chris King Base Plates (Crown Races) 44.0mm OD base plate is for headsets produced prior to 4/1995 and have an F designation 40.5mm OD base plate is for headsets produced after 4/1995 and have a B designation Chris King Base Plates (Crown Races) Crown Race UPC: 841529031683

by Chris King

—$13.60

Wheels Manufacturing Headset Bearings Item Specifications Bearing Type Retainer Bearing Wheels Manufacturing Headset Bearing Retainers Headset Bearing UPC: 836572001813

by Wheels Manufacturing

—$15.99

Cane Creek Headset Top Sub AssembliesStack height =9mm Cane Creek Top Covers Headset Small Part UPC: 840226077581

by Cane Creek

—$33.99

40-Series replacement cartridge bearings feature durable zinc construction.Compatible with 110-, 40-, and 10-Series headsets Item Specifications Bearing I.D. (mm) 42 Bearing O.D. (mm) 52 Bearing Type Cartridge Cartridge Bearing Angle 45x45 Thickness 7 Cane Creek 40-Series Headset Bearing UPC: 840226078465

by Cane Creek

—$18

There are a lot of things you don't need to buy for your bike, but this state of the art stem cap is not one of those useless things. It was designed with you, yes you, in mind. Molded around the tightest molecular combination of polymers, this stem cap makes you more aerodynamic than a B-2 spirit stealth bomber. Don't know what that is? Look it up. No. Don't waste time. Buy this stem cap and go race down a mountain, or a hill, or your driveway. Who cares? Go ride your bike. Worldwide Cyclery Top Cap Headset Top Cap

by Worldwide Cyclery

—$28

ABI Headset Bearing for new builds or replacements. Item Specifications Bearing I.D. (mm) 30.2 Bearing O.D. (mm) 41 Bearing Type Cartridge Cartridge Bearing Angle 36x45 Thickness 6.5 Enduro Headset Bearing Headset Bearing UPC: 811780022041

by Enduro

—$12.99

Cane Creek Crown Races Compatible across 10, 40 and 110 Series headsets and backwards compatible with S and XX Series All crown races feature integral molded seals Cane Creek Crown Races Crown Race UPC: 840226076928

by Cane Creek

—$12.99

Cane Creek Crown Races Compatible across 10, 40 and 110 Series headsets and backwards compatible with S and XX Series All crown races feature integral molded seals Cane Creek Crown Races Crown Race UPC: 840226077062

by Cane Creek

—$12

Problem Solvers Headset Top Caps Item Specifications Color Black S.H.I.S. Clamp Diameter 28.6 Problem Solvers Top Caps Headset Top Cap UPC: 708752073753

by Problem Solvers

—$12.99

Crown races for Cane Creek headsets fit a variety of lowers and crown race seat diameters. Compatible with 10-, 40- and 110-Series headsets and backwards compatible with S and XX Series Integral mold seals keep out the elements Item Specifications Crown Race 30 Cane Creek Crown Races Crown Race UPC: 840226077802

by Cane Creek

—$12

Cane Creek Crown Races Compatible across 10, 40 and 110 Series headsets and backwards compatible with S and XX Series All crown races feature integral molded seals Cane Creek Crown Races Crown Race UPC: 840226076652

by Cane Creek

—$19.95

The absoluteBLACK integrated headset top cap is a one-piece top cap and bolt, with 5mm hex socket. It is designed to fit every standard starnut. One piece design is lightweight (only 4g) Not suitable for "expanding" star nuts with a steel coil spring Compatible with the ENVE compression plug Item Specifications Color Black Defined Color Black Includes Star Nut No absoluteBLACK Integrated Headset Top Cap and Bolt Headset Top Cap EAN: 5110846001897

by absoluteBLACK

—$14.99

It's a stack spacer. It's a top cap. It's both! The Ultralight stem cap is designed specifically for carbon steerers that require that the steer tube extend above the stem. 1 1/8" top (straight 1 1/8" or 1 1/2" to 1 1/8" taper) steerer tubes only Light-weight and durable Wolf Tooth Stem Cap Headset Top Cap UPC: 812719020657

by Wolf Tooth

—$32

ABI Headset Bearing for new builds or replacements. Item Specifications Bearing I.D. (mm) 40 Bearing O.D. (mm) 52 Bearing Type Cartridge Cartridge Bearing Angle 45x45 Thickness 7 Enduro Headset Bearing Headset Bearing UPC: 811780023130

by Enduro

—$18

There are a lot of things you don't need to buy for your bike, but this state of the art stem cap is not one of those useless things. It was designed with you, yes you, in mind. Molded around the tightest molecular combination of polymers, this stem cap makes you more aerodynamic than a B-2 spirit stealth bomber. Don't know what that is? Look it up. No. Don't waste time. Buy this stem cap and go race down a mountain, or a hill, or your driveway. Who cares? Go ride your bike. Worldwide Cyclery Top Cap Headset Top Cap

by Worldwide Cyclery

—$12.99

Crown races for Cane Creek headsets fit a variety of lowers and crown race seat diameters. Compatible with 10-, 40- and 110-Series headsets and backwards compatible with S and XX Series Integral mold seals keep out the elements Item Specifications Crown Race 33 Cane Creek Crown Races Crown Race UPC: 840226077918

by Cane Creek

—$34

ABI Headset Bearing for new builds or replacements. Item Specifications Bearing I.D. (mm) 40 Bearing O.D. (mm) 51 Bearing Type Cartridge Cartridge Bearing Angle 36x36 Thickness 6.5 Enduro Headset Bearing Headset Bearing UPC: 810191012634

by Enduro

—$18

You'll have much more fun staring at this piece of priceless art on endless climbs than a plain old, stupid stem bolt. Complete your package with a Trail One Stem cap that not only looks unique but helps support the trails. For every Trail One Stem Cap sold, we will add $1 to the Trail One Treasury. The Treasury will periodically award funds to deserving trail networks. We exist to support the trails we love, the people that take care of them and to make your riding experience exceptional. To See the official Trail One website Click Here! See this product on the Trail One Site Here! Don't forget to check out the Trail One philanthropy projects at trailone.bike/projects Trail One Components T1 Stem Cap Headset Top Cap

by Trail One Components

—$24.99

Deity Crosshair Headset Cap. Minimalist, thin profile design with color matched aluminum bolt. Includes color matched 3mm, 5mm, and 8mm spacers to complete the look. 7075 T6 Machined Aluminum Bolt Kit Includes the Star Nut Deity Components Crosshair Headset Cap Headset Top Cap UPC: 817180024111

by Deity Components

—$13.40

40-Series BearingCompatible with 110-, 40-, and 10-Series headsets Item Specifications Bearing I.D. (mm) 30.3 Bearing O.D. (mm) 41.8 Bearing Type Cartridge Cartridge Bearing Angle 45x45 Thickness 7 Cane Creek 40-Series Headset Bearing UPC: 840226152172

by Cane Creek

—$13.99

The Salsa Split Pivot Dropout Tool Top Cap is a 22mm socket designed for in-the-field derailleur hanger replacement of Salsa suspension frames featuring Split Pivot technology. The Dropout Tool is designed to double as a top cap for a standard threadless stem/headset assembly, so that it will always be conveniently available in the event of a hanger failure. This tool is intended for trailside repairs only. Once you return back to base, use a torque wrench to achieve the proper torque spec of 18Nm. This handy tool works as a headset top cap until you need it, and when combined with a 6mm hex wrench, turns into a socket for removing the Pivot Bolt to change your derailleur hanger For all Salsa Split Pivot suspension models Integrated 22mm socket design interfaces axle nut to field change the derailleur hanger Operated via 6mm hex key found on most mini tools Takes place of standard top cap Reduces the need to carry 22mm wrench or socket in your pack Lightweight, black anodized aluminum bolt included 13g Lightweight aluminum bolt Item Specifications Color Black Defined Color Black Includes Star Nut No S.H.I.S. Stem Clamp Diameter 28.6 Salsa Split Pivot Dropout Tool Top Cap Headset Top Cap UPC: 657993039540

by Salsa

—$21.15

Crown races for Wolf Tooth headsets.For Wolf Tooth headsets Item Specifications Crown Race 40 Wolf Tooth Crown Race Crown Race UPC: 812719028011

by Wolf Tooth

—$21.99

40-Series BearingCompatible with 110-, 40-, and 10-Series headsets Item Specifications Bearing I.D. (mm) 34.25 Bearing O.D. (mm) 47 Bearing Type Cartridge Cartridge Bearing Angle 45x45 Thickness 7 Cane Creek 40-Series Headset Bearing UPC: 840226078373

by Cane Creek

—$15.83

Compression plug for Wolf Tooth headsets.Compression plug works with steerer tube inner diameters ranging from 23.2mm to 24.2mm Wolf Tooth Compression Plug Compression Plug UPC: 812719028332

by Wolf Tooth

—$39.95

Headset bearings for Wolf Tooth headsets.Replacement bearings Item Specifications Bearing Type Cartridge Cartridge Bearing Angle 36x45 Wolf Tooth Headset Bearing Headset Bearing UPC: 812719028318

by Wolf Tooth

—$17.99

Problem Solvers Compression Plugs Weight: 42g Compatible with steerer tube inner diameter of 26mm-22mm Item Specifications Color Black Problem Solvers Compression Plugs Compression Plug UPC: 708752023697

by Problem Solvers

—$20

Cane Creek Lower Race Required to fit RockShox Bluto on SM and MD Beargrease Carbon frames May be required to fit Manitou Mastodon Mukluk Carbon frames Item Specifications Crown Race 40 keyword search +3 mm Crown Race Riser Salsa Lower Race Crown Race UPC: 840226125558

by Salsa

—$19.95

The absoluteBLACK integrated headset top cap is a one-piece top cap and bolt, with 5mm hex socket. It is designed to fit every standard starnut. One piece design is lightweight (only 4g) Not suitable for "expanding" star nuts with a steel coil spring Compatible with the ENVE compression plug Item Specifications Color Gold Defined Color Gold Includes Star Nut No absoluteBLACK Integrated Headset Top Cap and Bolt Headset Top Cap EAN: 5110846002825

by absoluteBLACK

—$15.53

Headset bearings for Wolf Tooth headsets. Made from chromium steel for high load capacity and durability Black oxide coating reduces corrosion Replacement bearings Item Specifications Bearing O.D. (mm) 41 Bearing Type Black Oxide Steel Bearing Type Cartridge Cartridge Bearing Angle 36x45 Color Black Wolf Tooth Headset Bearing Headset Bearing UPC: 810006803631

by Wolf Tooth

—$36

ABI Headset Bearing for new builds or replacements. Item Specifications Bearing I.D. (mm) 34.1 Bearing O.D. (mm) 46.8 Bearing Type Cartridge Cartridge Bearing Angle 45x45 Thickness 7 Enduro Headset Bearing Headset Bearing UPC: 811780023123

by Enduro

—$12.99

Cane Creek Crown Races Compatible across 10, 40 and 110 Series headsets and backwards compatible with S and XX Series All crown races feature integral molded seals Cane Creek Crown Races Crown Race UPC: 840226077536

by Cane Creek

—$29.99

40-Series BearingCompatible with 110-, 40-, and 10-Series headsets Item Specifications Bearing I.D. (mm) 42 Bearing O.D. (mm) 52 Bearing Type Cartridge Cartridge Bearing Angle 36x45 Thickness 6.5 Cane Creek 40-Series Headset Bearing UPC: 840226078458

by Cane Creek

—$13.50

40-Series BearingCompatible with 110-, 40-, and 10-Series headsets Item Specifications Bearing I.D. (mm) 30.3 Bearing O.D. (mm) 41.8 Bearing Type Cartridge Cartridge Bearing Angle 36x45 Thickness 6.5 Cane Creek 40-Series Headset Bearing UPC: 840226078311

by Cane Creek

—$35

The Chris King Base Plates (Crown Races) 44.0mm OD base plate is for headsets produced prior to 4/1995 and have an F designation 40.5mm OD base plate is for headsets produced after 4/1995 and have a B designation Chris King Base Plates (Crown Races) Crown Race UPC: 841529023039

by Chris King