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Rear

Wolf Tooth Components 25mm B-Screw
$2.99
- Longer B-screw needed when using 40t or 42t cog with most Shimano derailleurs
Campagnolo 11-Speed Indexed Ratchet
$5.90
This is the indexed ratchet needed for converting Campagnolo 11-speed rear derailleurs with a 27-tooth maximum tooth capacity to a 29-tooth maximum tooth capacity to work with 12-29 cassettes.
Shimano SLX M7000-GS Rear Derailleur Cage Plate
$8.00 - $12.00
- Replacement plate for M7000-GS rear derailleur - Choose Inner or Outer
Shimano 105 5800 Rear Derailleur Pulley Set
$11.00
- Upper pulley has larger teeth for increased chain control
SRAM X3 7-/8-Speed Rear Derailleur
$23.00
SRAM's X3 Rear Derailleur is ready for adventure. Its composite and steel construction is tough, while SRAM's 1:1 actuation ratio and direct cable routing provide quick, reliable shifts. This derailleur is compatible with 7- or 8-speed drivetrains.
SRAM X4 7-/8-Speed Rear Derailleur
$29.00
SRAM's X4 Rear Derailleur provides precise, dependable shifting along with long-term durability. Its aluminum and steel construction delivers through the roughest trail, while SRAM's 1:1 actuation ratio and direct cable routing provide quick, reliable shifts. This derailleur is compatible with 7- or 8-speed drivetrains.
Shimano Sora SS9-Speed Rear Derailleur
$33.99
- Model Number: RD-R3000-SS - Series: SORA - Maximum Sprocket: 32T - Minimum Sprocket: 11T - Maximum Front Difference: 16T - Total Capacity: 37T
Shimano Sora GS 9-Speed Rear Derailleur
$37.99
- Model Number: RD-R3000-GS - Series: SORA - Maximum Sprocket: 34T - Minimum Sprocket: 11T - Maximum Front Difference: 20T - Total Capacity: 43T
Shimano Acera M3000 9-Speed Rear Derailleur
$38.99
- Cage Length: Long - Chain Wrap Capacity (Teeth): 45 Teeth - Color: Gray - Drivetrain Speeds: 9 - Largest Cog (Teeth): 36 - Rear Der/Shifter Compatibility: Shimano Mountain - Rear Derailleur Mount Type: 10X1 Standard , Shimano Rear Direct Mount
Gusset Squire Chain Tensioner
$39.95
- Lightweight sprung-type chain tensioner replaces derailleur for running a 1-Speed drivetrain on a vertical dropout frame - Variable tension and position (Can be used on rigid frames or suspension frames with varying chain length) - Supplied with 2 springs to provide pull-Up or push-down function - Superlight CNC machined alloy body, pivot bolt and sealed bearing pulley - Steel no-jump guide cage
Shimano Alivio Rear Derailleur  (9-speed)
$45.49
Shimano's Alivio Rear Derailleur is built to withstand the rigors of off-road riding, with a lightweight aluminum body and low-friction pivots for incredibly easy and smooth shifting. And, the Alivio features 11-tooth pulleys, which alternate chain-link contact reducing wear and smoothing pedaling.
SRAM X5 9-Speed Rear Derailleur
$47.00
SRAM's X5 9-Speed Rear Derailleur provides precise, dependable shifting along with long-term durability. Its aluminum construction keeps the weight down, while SRAM's 1:1 actuation ratio and direct cable routing provide quick, reliable shifts.
SRAM X5 10-Speed Rear Derailleur
$49.00
SRAM's X5 10-Speed Rear Derailleur provides precise, dependable shifting along with long-term durability. Its aluminum construction keeps the weight down, while SRAM's 1:1 actuation ratio and direct cable routing provide quick, reliable shifts.
Shimano Alivio Shadow Rear Derailleur (9-speed)
$50.69
Shimano's Alivio Shadow Rear Derailleur is built to withstand the rigors of off-road riding, with a lightweight aluminum body and low-friction pivots for incredibly easy and smooth shifting. And, the Alivio features 11-tooth pulleys, which alternate chain-link contact to reduce wear and smooth pedaling. • Cage Length: Long • Chain Wrap Capacity (teeth): 45 teeth • Color: Gray • Drivetrain Speeds: 9 • Largest Cog (teeth): 36 • Rear Der/Shifter Compatibility: Shimano Mountain • Rear Derailleur Mount Type: 10x1 Standard , Shimano Rear Direct Mount
Shimano Tiagra Rear Derailleur
$51.99 - $53.99
Shimano's Tiagra Rear Derailleur has everything you need for your drivetrain: 11-tooth pulleys for smooth, quiet chain movement, a light-action spring, and a wide outer-pivot design that increases rigidity for precision shifts every time.
Shimano 105 Rear Derailleur (Short Cage)
$52.99
Shimano's 105 Rear Derailleur delivers high-end function with upscale looks. With a body of light, durable cold-forged aluminum in Shimano's wide-pivot design with their light-action spring, rear shifting is practically effortless and always super smooth. The top pulley stays a uniform distance from each cassette cog ensuring that every shift resonates with the plunk of exact gear engagement.
Shimano 105 Rear Derailleur (Long Cage)
$53.99
Shimano's 105 Rear Derailleur delivers high-end function with upscale looks. With a body of light, durable cold-forged aluminum in Shimano's wide-pivot design with their light-action spring, rear shifting is practically effortless and always super smooth. The top pulley stays a uniform distance from each cassette cog ensuring that every shift resonates with the plunk of exact gear engagement.
SRAM Apex Rear Derailleur (Medium-cage)
$55.00 - $58.00
SRAM's Apex Rear Derailleur features cold-forged aluminum construction for sweet shifting, dependability and low weight. Designed for SRAM's 10-speed road drivetrains and featuring their Exact Actuation Technology, Apex will provide you with perfect shifting every time.
SRAM Apex Rear Derailleur (Short-cage)
$57.00
SRAM's Apex Rear Derailleur features cold-forged aluminum construction for sweet shifting, dependability and low weight. Designed for SRAM's 10-speed road drivetrains and featuring their Exact Actuation Technology, Apex will provide you with perfect shifting every time.
SRAM Rival 22 Rear Derailleur (Short Cage)
$57.00
Incredibly fast, astonishingly quiet, and impressively precise—fly through all 11 gears with SRAM's Rival 22 Rear Derailleur. It takes advantage of SRAM's Exact Actuation technology for precision shifts every time. Carefully shaped jockey wheels work together with the sculpted chain pulley cage for lightning-fast, ultra-precise shifts, and an elastomer coating applied to the jockey wheels makes for extra quiet operation. Aluminum inner and outer cages, aluminum links, and stainless steel hardware keep the durable Rival 22 at a svelte 180 grams.
Shimano 105 Rear Derailleur (Long Cage)
$57.99
Shimano's 105 Rear Derailleur delivers high-end function with upscale looks. With a body of light, durable cold-forged aluminum in Shimano's wide-pivot design with their light-action spring, rear shifting is practically effortless and always super smooth. The top pulley stays a uniform distance from each cassette cog ensuring that every shift resonates with the plunk of exact gear engagement.
Shimano 105 Rear Derailleur (Short Cage)
$59.99
Shimano's 105 Rear Derailleur delivers high-end function with upscale looks. With a body of light, durable cold-forged aluminum in Shimano's wide-pivot design with their light-action spring, rear shifting is practically effortless and always super smooth. The top pulley stays a uniform distance from each cassette cog ensuring that every shift resonates with the plunk of exact gear engagement.
Shimano Deore Shadow Rear Derailleur (Long Cage)
$64.99
Shimano's Deore Shadow Rear Derailleur is ready for mountain bike action. The Shadow design tucks the rear derailleur closer in to the wheel, reducing damage from rocks, roots, and trail obstacles. When it comes to gear changes, Shimano's Dyna-Sys supplies consistent, smooth shifting across the entire cassette.
Shimano Deore Shadow Rear Derailleur (Mid Cage)
$64.99
Shimano's Deore Shadow Rear Derailleur is ready for mountain bike action. The Shadow design tucks the rear derailleur closer in to the wheel, reducing damage from rocks, roots, and trail obstacles. When it comes to gear changes, Shimano's Dyna-Sys supplies consistent, smooth shifting across the entire cassette.
SRAM GX Type 2.1 10-Speed Rear Derailleur
$66.00
SRAM's GX 2x10 rear derailleur provides incredible shifting speed and precision. Exact Actuation technology eliminates slop and shifting variation. Roller Bearing Clutch technology delivers maximum drivetrain stability—even through the most punishing terrain. And with Cage Lock technology, wheel removal and installation are easier than ever.
Gevenalle BURD Rear Derailleur
$69.00
Gevenalle creates component solutions that address many of the typical equipment shortfalls that have limited cyclocross racers for decades. Their rear BURD (Blatantly Upgraded Rebranded Derailleur) takes a tough, no-nonsense road derailleur and makes it 'cross-ready. To do this, the "goats" at Gevenalle disassemble each derailleur and adjust the chain tension spring to deliver 25% more force, keeping your chain planted when the course turns to muddy, rutted chop. Then, they repack the derailleurs with premium Phil Wood grease and install upgraded pulleys for long-lasting smooth service in rough conditions. The result is a precise derailleur that performs better and lasts longer on the cyclocross circuit than regular road derailleurs.
SRAM Rival 22 Rear Derailleur WiFli (Mid Cage)
$69.00
Incredibly fast, astonishingly quiet and impressively precise—fly through all 11 gears with SRAM's Rival 22 Rear Derailleur. It takes advantage of SRAM's Exact Actuation technology for precision shifts every time. Carefully shaped jockey wheels work together with the sculpted chain pulley cage for lightning-fast, ultra-precise shifts, and an elastomer coating applied to the jockey wheels makes for extra quiet operation. Aluminum inner and outer cages, aluminum links, and stainless steel hardware keep the durable Rival 22 at a svelte 191 grams. Plus, SRAM's WiFLi technology delivers a wider range of gears than your standard triple, faster shifts through two chainrings and every gear on the rear cassette, all with significant weight savings.
Shimano SLX Shadow Plus 11-Speed Rear Derailleur
$69.99
- Rider Tuned For Sharp And Silky Shifts - 20% Light Shifting Operation - New Shadow Design With Optimized Slant Angle - Optislick New Shift Cable With New Hyper Low-Friction Coating Technology - Chain Stability Improved - New Shadow Design With Optimized Slant Angle For Stable Gear Position - Efficient Shifting And Smoother Driving - Efficient Pulley Teeth Design - Increased Traction Range For Long-Travel And Active Rear Suspension - Series : SLX: SLX - Maximum Sprocket : 42T(2x11-speed) or 46T(1x11-speed) - Minimum Sprocket : 11T: 34-38T - Front Difference : 10T: 48.8 - Total Capacity : 41T: 66-69 - Average Weight : 323g: 145.6g
Shimano ZEE Shadow + Rear Derailleur
$69.99
Run silent, run deep. Shimano's ZEE rear derailleur uses a short cage and a Shadow profile to keep tucked out of the way of rocks, roots, whatever. The Plus part is a one-way clutch system that stabilizes the cage and your chain when ripping over rough terrain. Chain slap and the noise that goes with it, as well as dropped chains, are virtually eliminated. Of course, it still has the smooth action and sniper-like shifting that Shimano is rightly famous for. Freeriders and trail riders can run a typical MTB cassette like an 11-32, 11-34, or 11-36. And DHers can choose the close-ratio version and run a road cassette like 11-23, 11-25 or 11-28.
SRAM XX1 Ceramic Bearing Rear Derailleur Pulleys
$74.99
SRAM's XX1 Ceramic Bearing Rear Derailleur Pulleys run on super-smooth, efficient ceramic bearings so your drivetrain rolls with ease. They are lighter than conventional pulleys and even come with SRAM's ceramic-bearing grease in an easy-to-use 10ml syringe.
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