—$129.99

Deore XT RD-M8100 Rear Derailleur Long cage is designed to be used with 1x12 drivetrain systems Offers fast and shockless shifting thanks to HYPERGLIDE+ technology The low-profile design includes a bumper added to the derailleur pulley cage Shimano Shadow RD+ technology reduces chain slap and creates a quieter drivetrain Includes large 13t pulley Drivetrain is silent in all gear positions with decreased rear derailleur and chain tension in low gear Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 41 Color Black Drivetrain Speeds 12 Largest Cog 51 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard Weight 284 Shimano Deore XT RD-M8100 Rear Derailleur UPC: 192790443645

by Shimano

—$78.99

SLX RD-M7100 Rear DerailleurLong cage derailleur Item Specifications Cage Length Long Color Black Drivetrain Speeds 12 Largest Cog 51 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard Weight 316 Shimano SLX RD-M7100 Rear Derailleur UPC: 192790444253

by Shimano

—$273.99

The Shimano XTR M9100 is designed to withstand full force pedalling on the roughest trails, with smooth shifting and exceptional chain stability. It offers enhanced shifting performance, a low profile design, and low sprocket compatibility. For use with 1x11 and 1x12 set ups Will accommodate up to a 51-tooth cog Designed with a Shadow RD+ clutch to reduce chain slap and create a quiet drivetrain with less distraction Decreased rear derailleur tension at low gear positions prevents high chain tension Features a larger 13-tooth pulley Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 41 Color Gray Drivetrain Speeds 12 Largest Cog 51 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard Weight 240 Shimano XTR RD-M9100 Rear Derailleur Rear Derailleur UPC: 689228880252

by Shimano

—$109.99

Shimano XT RD-M8000 Rear Derailleurs 46 tooth maximum rear cog for 1x11, 42 tooth maximum for 2x11 and 40 tooth maximum for 3x11 Low profile derailleur cage reduces collection of debris and potential for damage Shadow clutch reduces chain slap and dropped chains, on-off switch allows for simple wheel changes Externally adjustable clutch for easier spring tension adjustment Optimized slant angle lowers shift effort while improving shifting and driving stability NOT compatible with M8130 Linkglide shifters Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 39 Color Black Drivetrain Speeds 11 Largest Cog 46 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 271 Shimano XT RD-M8000 Rear Derailleur Rear Derailleur UPC: 689228919990

by Shimano

—$67.99

The Shimano RD-M6100 Rear Derailleur provides efficient and smooth shifting for Deore M6100 12-speed drivetrains. Features the Shadow RD+ chain stabilizer system to minimize chain slap Fast and precise shifting 13T pulley For single front chainring setup 51T max cog size Item Specifications Cage Length Long Color Black Drivetrain Speeds 12 Largest Cog 51 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard Shimano Deore M6100 Rear Derailleur Rear Derailleur UPC: 192790618692

by Shimano

—$59.99

The Shimano RD-M5100 Rear Derailleur provides efficient and smooth shifting for Deore M5100 11-speed drivetrains. Features the Shadow RD+ chain stabilizer system to minimize chain slap Compatible with a 51T maximum cog size for 11-speed systems Item Specifications Cage Length Long Color Black Drivetrain Speeds 11 Largest Cog 51 Rear Der/Shifter Compatibility Shimano DynaSys11 Rear Derailleur Mount Type 10x1 Standard Shimano Deore M5100 Rear Derailleur Rear Derailleur UPC: 192790618708

by Shimano

—$129.99

The Shimano GRX 11-speed rear derailleur has an integrated chain stabilizer mechanism, that provides a quieter experience, shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an ON/OFF switch for the chain tensioner. The Shimano Shadow RD+ adjustable chain stabilizer provides silent and uninterrupted rear shifting on rough terrain. For 1x drivetrains 42t low sprocket max / 11t top sprocket max Adjustable Shimano RD+ chain stablizer prevents chain slapping and drops Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting Compatible with Shimano road Dual Control Levers Compatible with Shimano LinkGlide and HG 11-speed chains Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 31 Color Black Drivetrain Speeds 11 Largest Cog 42 Rear Der/Shifter Compatibility Shimano Road Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 267 Shimano GRX RD-RX810/RX812 11-Speed Rear Derailleurs Rear Derailleur UPC: 192790448886

by Shimano

—$109.99

Shimano XT M8000 Rear Derailleur Rider tuned for sharp and silky shifts. Light shift operation with 20% less effort. Chain stability improved. New shift cable with new hyper low-friction coating technology. Easy-to-adjust chain stabilizer. Efficient pulley teeth design. New shadow design with optimized slant angle for stable gear position. Shimano XT RD-M8000 Rear Derailleur Rear Derailleur UPC: 689228920002

by Shimano

—$47.04

Utilizing the SHIMANO SHADOW RD+ design, the SHIMANO DEORE M5120 rear derailleur delivers consistent MTB shifting performance over rough terrain. positions. 46T(1x10), 42T(2x11/2x10) : Max Low Sprocket Pulley teeth: 11 Low profile design avoids damage from rocks Chain stabilizing technology reduces chain drop and makes for a quiet drivetrain in all gears Item Specifications Color Black Drivetrain Speeds 10 Drivetrain Speeds 11 Shimano Deore RD-M5120 Rear Derailleur Rear Derailleur UPC: 192790618548

by Shimano

—$121.99

The Shimano Deore XT M8130 LINKGLIDE 11-speed Rear Derailleur with SHADOW+ technology delivers smooth and decisive shifting. Roomy chain clearance and stability over rough mountain terrains reduce chain slap and droppage. Designed to integrate with LINKGLIDE cassettes Rear derailleur stabilizer reduces chain slap and improves chain stability Low-profile design is optimized for rough terrain Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 39 Color Black Designed for ebike Yes Drivetrain Speeds 11 Largest Cog 50 Rear Derailleur Mount Type Shimano Rear Direct Mount Shimano Deore XT RD-M8130 LINKGLIDE 11-Speed Rear Derailleur Rear Derailleur UPC: 192790897110

by Shimano

—$94.99

The Shimano SLX RD-M7000 rear derailleur provides efficient shifting and smooth driving with exceptional chain stability. Shimano Shadown RD+ technology uses a rear derailleur stabilizer to reduce chain slap and provide a quieter drivetrain Compatible with cassettes that feature a 42t cog for 2x11 drivetrains or a 46t cog for 1x11 drivetrains Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 41 Color Black Drivetrain Speeds 11 Largest Cog 46 Rear Der/Shifter Compatibility Shimano DynaSys11 Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Shimano SLX RD-M7000 Rear Derailleur Rear Derailleur UPC: 689228847545

by Shimano

—$79.80

The Shimano Deore M6000 rear derailleur is designed for aggressive trail riding and uses SHIMANO SHADOW RD PLUS technology for improved chain stability and retention. For 2x10 setups Features the Shadow RD+ chain stabilizer system to minimize chain slap Utilizes Shadow RD Plus offers a quieter drivetrain and reduces chain slap Shadow RD Plus provides a simple solution for chain drop and is lighter and efficient that roller type chain devices Optislick cable for a light shifting effort Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 41 Color Black Drivetrain Speeds 10 Largest Cog 42 Rear Der/Shifter Compatibility Shimano DynaSys Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Shimano Deore RD-M6000 10-Speed Rear Derailleur Rear Derailleur UPC: 689228413245

by Shimano

—$126.99

With an integrated chain stabilizer, Shimano GRX RD-RX822 12-speed rear derailleurs feature an intergrated chain stablizer that delivers quieter shifting and more secure chain management in rough terrain. The chain tensioner has an ON/OFF switch for easy wheel removal. Shimano RD-RX822-SGS rear derailleur with long cage is compatible with 10-51t, 12-speed Shimano MTB cassettes, meaning you ll never run out of gears even on the steepest jeep road or high mountain singletrack ascent Interchangeable, replaceable GS/SGS derailleur cage Shadow RD+ design, combined with the adjustable chain stablilizer, prevents chain slap and drops ON/OFF stabilizer switch matches terrain for smooth and reliable shifting on mixed surfaces Compatible with HG 12-Speed Chains Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 41 Drivetrain Speeds 12 Largest Cog 51 Rear Der/Shifter Compatibility Shimano Road Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 288 Shimano GRX RD-RX822 12-Speed Rear Derailleurs Rear Derailleur UPC: 192790303628

by Shimano

—$62.99

GRX RD-RX400 Rear Derailleur A Shadow RD+ chain stabilizer prevents chain slapping and drops The gravel-tuned clutch tension helps to provide smooth and reliable mixed surface shifting Stabilizer can be turned on/off to match terrain Compatible only with 10-speed ST-RX400, ST-4700, ST4720, ST-4725, ST-RS405 and SL-4700 shift levers Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 41 Color Black Drivetrain Speeds 10 Largest Cog 36 Rear Der/Shifter Compatibility Shimano Road Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 303 Shimano GRX RD-RX400 Rear Derailleur UPC: 192790448893

by Shimano

—$129.99

The Shimano GRX 11-speed rear derailleur has an integrated chain stabilizer mechanism, that provides a quieter experience, shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features an ON/OFF switch for the chain tensioner. The Shimano Shadow RD+ adjustable chain stabilizer provides silent and uninterrupted rear shifting on rough terrain. Toggle clutch on/off to match the terrain For 1x and 2x drivetrains 34t low sprocket max / 11t top sprocket max Adjustable Shimano RD+ chain stablizer prevents chain slapping and drops Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting Compatible with Shimano road Dual Control Levers Compatible with Shimano LinkGlide and HG 11-speed chains Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 40 Color Black Drivetrain Speeds 11 Largest Cog 34 Rear Der/Shifter Compatibility Shimano Road Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 255 Shimano GRX RD-RX810/RX812 11-Speed Rear Derailleurs Rear Derailleur UPC: 192790448879

by Shimano

—$97.99

Shimano XT RD-M780, M770 SeriesRear Derailleurs Shadow+ chain stabilizer provides a simple, lightweight chain control solution Direct routing reduces the risk of snagging Stronger return spring for more crisp shifting feeling Bracket axle keeps the derailleur body from contacting the chainstay Narrow profile Mounts to derailleur hanger on frame Item Specifications Color Black Intended Use Mountain Cassette Spacing DynaSys 10 Shifter/Derailleur Compatibility DynaSys 10 Derailleur Action Top-Normal (Traditional) Cage Length Long Shimano XT RD-M780/M770 Series Rear Derailleur Rear Derailleur UPC: 689228299290

by Shimano

—$97.99

Shimano XT RD-M780, M770 SeriesRear Derailleurs Shadow+ chain stabilizer provides a simple, lightweight chain control solution Direct routing reduces the risk of snagging Stronger return spring for more crisp shifting feeling Bracket axle keeps the derailleur body from contacting the chainstay Narrow profile Mounts to derailleur hanger on frame Item Specifications Color Black Intended Use Mountain Cassette Spacing DynaSys 10 Shifter/Derailleur Compatibility DynaSys 10 Derailleur Action Top-Normal (Traditional) Cage Length Medium Shimano XT RD-M780/M770 Series Rear Derailleur Rear Derailleur UPC: 689228299450

by Shimano

—$118.97

Deore XT RD-M8100 Rear Derailleur Medium cage derailleur for 12-speed drivetrain Offers fast and shockless shifting thanks to HYPERGLIDE+ technology The low-profile design includes a bumper added to the derailleur pulley cage Shimano Shadow RD+ technology reduces chain slap and creates a quieter drivetrain Includes large 13t pulley Drivetrain is silent in all gear positions with decreased rear derailleur and chain tension in low gear Item Specifications Cage Length Medium Color Black Drivetrain Speeds 12 Largest Cog 45 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Shimano Deore XT RD-M8100 Rear Derailleur UPC: 192790897097

by Shimano

—$179.99

The new standard in DH rear derailleurs – New chain control and silencing technologies exclusive to Saint debut in the new short cage Saint Shadow Plus RD-M820. Unique features include a new silent bump stopper, Shadow Plus chain control technology and a cassette mode converter. The third generation of Saint was developed under the “Pure Gravity” design philosophy with a clear focus on downhill speed. New Saint is dedicated to DH racing, new Saint enhances concentration and focus through seamless and stable bike control, new Saint accelerates and decelerates at Word cup levels. Saint-specific Shadow Plus design with integrated urethane bump stopper doubling-down on Shadow Plus functionality Shadow+ chain stabilizer provides a simple, lightweight chain control solution Mode Converter allows the derailleur to track different type of cogsets DH mode is a close ratio mode to track up to a 23T-28T low gear AM mode is optimized for a wider ratio cogset with a 32T - 34T low gear Item Specifications Intended Use Mountain Cassette Spacing DynaSys 10 Shifter/Derailleur Compatibility Shimano Derailleur Action Top-Normal (Traditional) Cage Length Short Shimano Saint RD-M820 Rear Derailleur Rear Derailleur UPC: 689228299689

by Shimano

—$77.43

Shimano ZEE RD-M640 Rear Derailleurs FR spec designed for use with wide-range cassettes; up to 36t max cog Shadow Plus technology proven to reduce chain slap, drop and impact noise and the 10-speed short cage rear derailleur's low-profile tucks safely below the cassette cogs Item Specifications Color Gray Weight 250g Intended Use DH-Freeride Cassette Spacing Shimano MTN 10 Shifter/Derailleur Compatibility Shimano MTN 10 Largest Cog 36teeth Chain Wrap Capacity 25teeth Derailleur Action Top-Normal (Traditional) Cage Length Short Shimano ZEE RD-M640 Rear Derailleur Rear Derailleur UPC: 689228305328

by Shimano

—$273.99

The Shimano XTR M9100 is designed to withstand full force pedalling on the roughest trails, with smooth shifting and exceptional chain stability. It offers enhanced shifting performance, a low profile design, and low sprocket compatibility. For use with 1x11 and 1x12 set ups, but only up to a 45-tooth cog Mid-cage option is 28mm shorter, offering superior ground clearance Designed with a Shadow RD+ clutch to reduce chain slap and create a quiet drivetrain with less distraction Decreased rear derailleur tension at low gear positions prevents high chain tension Features a larger 13-tooth pulley Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 35 Color Gray Drivetrain Speeds 12 Largest Cog 45 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard Weight 237 Shimano XTR RD-M9100 Rear Derailleur Rear Derailleur UPC: 689228880245

by Shimano

—$108.99

(Note, this amazing price doesn't include retail packaging. Rest assure the FULL manufacturer warranty is still valid)Deore XT RD-M8100 Rear Derailleur Long cage is designed to be used with 1x12 drivetrain systems Offers fast and shockless shifting thanks to HYPERGLIDE+ technology The low-profile design includes a bumper added to the derailleur pulley cage Shimano Shadow RD+ technology reduces chain slap and creates a quieter drivetrain Includes large 13t pulley Drivetrain is silent in all gear positions with decreased rear derailleur and chain tension in low gear Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 41 Color Black Drivetrain Speeds 12 Largest Cog 51 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard Weight 284 Shimano Deore XT RD-M8100 Rear Derailleur

by Shimano

—$363.05

The all-new DEORE XT RD-M8150 speed rear derailleur combines race-proven quality with Shimano original technologies to help keep you flowing and focused on the right line. The new E-MTB optimized design allows full integration with SHIMANO E-Bike Systems and HYPERGLIDE+ drivetrains to unlock entirely new functionality. This system integration allows innovative features like FREE SHIFT. It's a simpler, more pure E-MTB experience only possible through the fusion of drivetrain engineering, e-bike system components, and electronic shifting intelligence. Wide range: 11-50T Auto Shift with Manual Override uses an advanced shifting algorithm to continually analyze data from multiple sensors to automatically put you in the optimal gear without requiring manual input at the shifter Durable drive quality and enduring shifting performance LINKGLIDE Technology FREE SHIFT allows you to select the optimal gear while coasting into switchbacks or dynamic terrain changes, so you're always ready to charge with better balance and control Quick and smooth shifting under the heavier chain loads of e-bikes Power directly supplied from main STEPS battery Customize and run diagnostics with E-TUBE PROJECT Low-profile design offers uninterrupted rear shifting on rough terrain Connect directly to STEPS via E-TUBE cable EW-SD300 Shimano Deore XT RD-M8150 Di2 rear Derailleur Rear Derailleur UPC: 192790239620

by Shimano

—$334.99

GRX RD-RX815 Di2 Rear Derailleur For 1x drivetrains Operates with Shimano Di2 for digital electronic shifting Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 31 Color Black Drivetrain Speeds 11 Largest Cog 42 Rear Der/Shifter Compatibility Shimano Road Di2 Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 318 Shimano GRX RD-RX815 Di2 Rear Derailleur UPC: 192790443171

by Shimano

—$64.68

The Deore rear derailleur offers a trekking-tuned spring for light and smooth shifting on all sprockets. The shadow design echoes other Shimano rear derailleurs with a low profile shape and single tension construction that does not hit the chain stay in rough riding conditions. Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 47 Color Black Drivetrain Speeds 10 Largest Cog 36 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 304 Shimano Deore RD-T6000 Rear Derailleurs Rear Derailleur Rear Derailleur UPC: 689228413283

by Shimano

—$79.30

The Shimano Deore M6000 rear derailleur is designed for aggressive trail riding and uses SHIMANO SHADOW RD PLUS technology for improved chain stability and retention. For use with 3 x 10-Speed setups Utilizes Shadow RD Plus offers a quieter drivetrain and reduces chain slap Shadow RD Plus provides a simple solution for chain drop and is lighter and efficient that roller type chain devices Optislick cable for a light shifting effort Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 43 Color Black Drivetrain Speeds 10 Largest Cog 36 Rear Der/Shifter Compatibility Shimano DynaSys Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Shimano Deore RD-M6000 10-Speed Rear Derailleur Rear Derailleur UPC: 689228413252

by Shimano

—$118.99

Deore XT RD-M8100 Rear Derailleur Long cage is designed to be used with 2x12 drivetrain systems Offers fast and shockless shifting thanks to HYPERGLIDE+ technology The low-profile design includes a bumper added to the derailleur pulley cage Shimano Shadow RD+ technology reduces chain slap and creates a quieter drivetrain Includes large 13t pulley Drivetrain is silent in all gear positions with decreased rear derailleur and chain tension in low gear Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 45 Color Black Drivetrain Speeds 12 Largest Cog 45 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type 10x1 Standard Weight 284 Shimano Deore XT RD-M8100 Rear Derailleur UPC: 192790443652

by Shimano

—$102.22

Shimano Ultegra RD-R8000 Rear Derailleur Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 39 Color Black Drivetrain Speeds 11 Largest Cog 34 Rear Der/Shifter Compatibility Shimano Road Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 210 Shimano Ultegra RD-R8000 Rear Derailleur Rear Derailleur UPC: 689228623163

by Shimano

—$54.99

Find your riding zone with the smooth and decisive shifting of the Shimano Deore M5130 10-speed Rear Derailleur for LINKGLIDE drivetrains. SHADOW+ technology provides roomy clearance and chain stability on rough mountain terrains. For 1x10 drivetrain System designed to integrate with LINKGLIDE cassettes for smooth shifting Shadow RD+ technology is a simple solution for chain drop, for a less distracting, quieter drivetrain Low-profile design is optimized for rough terrain Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 32 Color Black Drivetrain Speeds 10 Largest Cog 43 Rear Der/Shifter Compatibility Shimano Mountain Rear Derailleur Mount Type Shimano Rear Direct Mount Shimano Deore RD-M5130 Rear Derailleur Rear Derailleur UPC: 192790897103

by Shimano

—$299.99

GRX RD-RX815 Di2 Rear Derailleur For 1x and 2x drivetrains Operates with Shimano Di2 for digital electronic shifting Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 38 Color Black Drivetrain Speeds 11 Largest Cog 34 Rear Der/Shifter Compatibility Shimano Road Di2 Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 287 Shimano GRX RD-RX815 Di2 Rear Derailleur UPC: 192790443188

by Shimano

—$117.21

The Ultegra RX Rear Derailleur brings Shimanos' chain stabilizing technology road cycling drivetrains, delivering smooth and precise shifting over technical terrain. It expands road bike capabilities, inspiring confidence on any surface and drives the evolution of road cycling to include greater elements of adventure. The Ultegra RX Rear Derailleur is available in 11-speed Mechanical or Di2 compatible options. Designed for use on 2x11-speed mechanical systems Shimano Shadow RD+ chain stabilizer mechanism Includes clutch with On/Off switch Compatible with current road Dual Control Levers Direct Mount Compatible Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 39 Color Black Drivetrain Speeds 11 Largest Cog 34 Rear Der/Shifter Compatibility Shimano Road Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 248 Shimano Ultegra RD-RX800 Rear Derailleur Rear Derailleur UPC: 689228871106

by Shimano

—$374.99

The all-new DEORE XT RD-M8150 speed rear derailleur combines race-proven quality with Shimano original technologies to help keep you flowing and focused on the right line. The new E-MTB optimized design allows full integration with SHIMANO E-Bike Systems and HYPERGLIDE+ drivetrains to unlock entirely new functionality. This system integration allows innovative features like FREE SHIFT. It's a simpler, more pure E-MTB experience only possible through the fusion of drivetrain engineering, e-bike system components, and electronic shifting intelligence. Wide range: 10-51T Fast and precise shifting performance optimized to take on any trail HYPERGLIDE+ technology FREE SHIFT allows you to select the optimal gear while coasting into switchbacks or dynamic terrain changes, so you're always ready to charge with better balance and control Quick and smooth shifting under the heavier chain loads of e-bikes Power directly supplied from main STEPS battery Customize and run diagnostics with E-TUBE PROJECT Low-profile design offers uninterrupted rear shifting on rough terrain Connect directly to STEPS via E-TUBE cable EW-SD300 Shimano Deore XT RD-M8150 Di2 rear Derailleur Rear Derailleur UPC: 192790239613

by Shimano

—$126.99

The Shimano RD-RX820 rear derailleur is compatible with 11-34t and 11-36t 12-speed cassettes, providing a wide gear range so you can spin a comfortable cadence no matter the terrain type. This rear derailleur also features an integrated chain stabilizer that delivers quieter shifting and more secure chain management during rough rides. The chain tensioner has an ON/OFF switch for outings on smooth surfaces. Silent and secure rear shifting on rough terrain Adjustable chain stabilizer prevents chain slap and drops Shimano Shadow RD+ offers less distraction, a quiet drive train, reduced chain slap and a solution for chain drop ON/OFF stabilizer switch matches terrain for smooth and reliable shifting on mixed surfaces Compatible with HG 12-Speed Chains Item Specifications Chain Wrap Capacity (teeth) 42 Drivetrain Speeds 12 Largest Cog 36 Rear Der/Shifter Compatibility Shimano Road Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 270 Shimano GRX RD-RX820 12-Speed Rear Derailleur Rear Derailleur UPC: 192790303611

by Shimano

—$126.99

With an integrated chain stabilizer, Shimano GRX RD-RX822 12-speed rear derailleurs feature an intergrated chain stablizer that delivers quieter shifting and more secure chain management in rough terrain. The chain tensioner has an ON/OFF switch for easy wheel removal. Shimano RD-RX822-GS rear derailleur with medium cage is compatible with 10-45t, 12-speed Shimano MTB cassettes Interchangeable, replaceable GS/SGS derailleur cage Shadow RD+ design, combined with the adjustable chain stablilizer, prevents chain slap and drops ON/OFF stabilizer switch matches terrain for smooth and reliable shifting on mixed surfaces Compatible with HG 12-Speed Chains Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 35 Drivetrain Speeds 12 Largest Cog 45 Rear Der/Shifter Compatibility Shimano Road Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 290 Shimano GRX RD-RX822 12-Speed Rear Derailleurs Rear Derailleur UPC: 192790303635

by Shimano

—$409.99

Shimano's GRX RX825 Di2 12-speed rear derailleur features a built-in wireless connectivity unit and charging port, ensuring fast and reliable shifting for mixed-terrain riding and easy recharging. Integrated Shadow RD+ technology prevents chain slap and ensures precise shifting even on rough terrain. Thanks to built-in ON/OFF switch, wheel removal is easy too. The RD-RX825 is compatible with 11-34t and 11-36t 12-speed cassettes and supports Full or Semi-Synchronized shift modes, enhancing rider customization. Integrated wireless unit, charging port, and switch allows a compact design Offers fast and reliable shifting on rough terrain Adjustable chain stabilizer prevents chain slap Shimano Shadow RD+ offers a quiter drivetrain by utilizes a stablizer to reduce chain slap and provides a simple solution for chain drops Gravel-tuned clutch tension features a switch stabilizer ON/OFF to match terrain - ON for gravel, OFF for smooth roads LED status indicator to easier identify battery life, pairing, adjust mode, etc. Top sprocket: Max. 11t/Min. 11t Low sprocket: Max. 36t/Min. 34t Total Capacity: 40t Item Specifications Cage Length Long Chain Wrap Capacity (teeth) 40 Color Black Drivetrain Speeds 12 Largest Cog 36 Rear Der/Shifter Compatibility Shimano Road Di2 Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Shimano GRX RD-RX825 Di2 Rear Derailleur Rear Derailleur UPC: 192790310893

by Shimano

—$64.99

The Shimano 105 12-speed rear derailleur combines the smooth and stable shifting that is a staple of Shimano Shadow RD design with direct mount compatibility and a wider gear range capacity. Shadow RD offers a low-profile design with single tension construction that prevents the derailleur from hitting the chainstay in rough riding conditions Direct Mount feature is design for large contempory frames with large section chainstays, in particular mountain bikes with thru-axle dropouts Wider gear range capacity and stable shifting performance Compatible with HG 12-speed chains 41t total capacity 36t low sprocket maximum 34t low sprocket minimum Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 41 Color Black Drivetrain Speeds 12 Largest Cog 36 Rear Der/Shifter Compatibility Shimano Road Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 249 Shimano 105 RD-R7100 Rear Derailleur Rear Derailleur UPC: 192790819013

by Shimano

—$279.99

The Shimano 105 RD-R7150 Di2 12-speed rear derailleur completes a shift in the blink of an eye with its high-performance motor and optimized link structure. This is the hub of the Shimano Di2 system, with the charging port, indicator LEDs, adjustment switches and more integrated into a compact package. Low-profile Shimano Shadow RD design reduces damage from contact and falls Receive the wireless shifting signal from the shift lever Check the battery level and Bluetooth/ANT pairing success with your cycle computer/smartphone/tablet Allows selection of preferred shift mode and view adjustment mode information (if you wish to tweak or tune your rear derailleur) Smartphone/tablet connectivity via E-TUBE PROJECT Item Specifications Chain Wrap Capacity (teeth) 41 Color Black Drivetrain Speeds 12 Largest Cog 36 Rear Der/Shifter Compatibility Shimano Road Di2 Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Weight 302 Shimano 105 RD-R7150 Di2 Rear Derailleur Rear Derailleur UPC: 192790234229

by Shimano

—$409.99

With the fast and accurate Di2 shifting technology, the Shimano 12-speed Ultegra RD-R8150 rear derailleur is extremely versatile thanks to a single cage length option compatible with 11-28, 11-30, and 11-34 cassettes. Compact design includes an integrated wireless unit, charger, switch Wider range capacity Max. low sprocket 34t LED status indicator Battery indicator, pairing, adjust mode etc. Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 39 Color Black Drivetrain Speeds 12 Largest Cog 34 Rear Der/Shifter Compatibility Shimano Road Di2 Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Shimano Ultegra RD-R8150 Di2 12-Speed Rear Derailleur Rear Derailleur UPC: 192790240961

by Shimano

—$814.99

The Shimano Dura-Ace RD-R9250 rear derailleur integrates the system charging port and a wireless connectivity unit all while delivering super fast, precise shifting worthy of any podium. A single cage length shifts cassettes from 11-28 to 11-34, offering exceptional versatility. Ultra-fast rear Di2 shifting Compact design includes an integrated wireless unit, charger, switch Wider range capacity Max. low sprocket: 34t CFRP rear derailleur plate LED status indicator Battery indicator, pairing, adjust mode etc. Item Specifications Cage Length Medium Chain Wrap Capacity (teeth) 37 Color Black Drivetrain Speeds 12 Largest Cog 34 Rear Der/Shifter Compatibility Shimano Road Di2 Rear Derailleur Mount Type 10x1 Standard Rear Derailleur Mount Type Shimano Rear Direct Mount Shimano Dura-Ace RD-R9250 Di2 12-Speed Rear Derailleur Rear Derailleur UPC: 192790240954

by Shimano