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$103.99
Shimano's Deore XT Rear Derailleur uses cold-forged construction and cutting edge technology to deliver crisp shifting, real-world reliability, and trademark precision. Plus-type derailleurs use a lever-actuated clutch spring to prevent chain slap, reduce noise while on the trail, and improve chain engagement when riding over rough terrain. Sealed pulley bearings keep things spinning smoothly, and wide plate construction prevents the derailleur from getting clogged with mud and debris.

$39.99
Shimano's Tourney long cage rear derailleur incorporates advanced Shimano functions and styling that sets the standard for entry level components.
- TY model comes with resin bracket and plate body for reduced weight
- Zinc-plated adjustment screws for corrosion resistance
- MegaRange compatible
- Includes frame hanger
- Maximum cog size: 34t
- Total capacity: 43t

$103.99
Shimano's Deore XT Rear Derailleur uses cold-forged construction and cutting edge technology to deliver crisp shifting, real-world reliability, and trademark precision. Plus-type derailleurs use a lever-actuated clutch spring to prevent chain slap, reduce noise while on the trail, and improve chain engagement when riding over rough terrain. Sealed pulley bearings keep things spinning smoothly, and wide plate construction prevents the derailleur from getting clogged with mud and debris.

$39.99
Enjoy quality and reliability with the Shimano Tourney 6/7-speed rear derailleur. It makes use of Shimano SIS, HyperGlide, and Double Servo technologies for smooth, accurate shifts.
- Maximum cog size: 34t
- Total capacity: 43t

$32.00
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.

$71.00
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.

$323.00
Occupying a new realm in shifting performance, the redesigned XX1 Eagle derailleur gives no-compromise racers and dream-bike builders a true top-tier option. The crisp, precise XX1 shifting feel athletes rely on now features an updated cage geometry for improved chain management. Occupying its rightful place at the top of the Eagle ecosystem, the XX1 Eagle rear derailleur makes full use of the new 10-52T cassettes and is backward-compatible with 10-50T cassettes, as well.
- Updated cage geometry provides better chain retention and crisper shifting
- Comes in XX1 Eagle master colorway as part of Eagle Colorsystem to go with all cassette and chain color options
- Backward-compatible with 10-50T cassettes, works with new 10-52T cassettes

$87.00
The SRAM NX X-HORIZON rear derailleur provides the same smooth, reliable shifting action as XX1—from the larger upper pulley offset to the 12-tooth X-SYNC pulley wheels. By eliminating unwanted chain movement, X-HORIZON shifts faster, puts an end to ghost shifting and reduces shift force and chain slap. And with Cage Lock technology, wheel removal and installation are easier than ever.
- X-HORIZON design that reduces shift force, ghost shifting and chain slap
- 12-tooth X-SYNC pulley wheels
- Fully compatible with all SRAM MTB 1x drivetrains
- Most affordable fully featured 1x rear derailleur in the industry
- Speeds: 11-speed
- Weight: 322 grams
- Color: Black
- Compatibility: X-ACTUATION
- Bearings: Steel
- Cage Size: Long
- Max Tooth: 42

$243.00
The SRAM Force 1 rear derailleur adopts all the technologies of SRAM 1x MTB to provide the fastest, quietest 1x shifting available. SRAM’s unique clutch system eliminates chain slack, providing for smoother, quieter, and more secure chain travel.
- A dedicated 1x rear derailleur
- EXACT ACTUATION for fast and accurate shifts using SRAM’s 1:1 actuation ratio (shifter cable travel: derailleur movement).
- 10- and 11-speed compatible
- X-SYNC pulley features a 12-tooth design that helps control the chain’s lateral movement
- X-HORIZON “straight parallelogram” design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force
- ROLLER BEARING CLUTCH’s one-way roller clutch controls chain tension for consistent shifting
- Cage Lock technology makes for fast wheel changes or chain installation
- Available in Short: 11-26 through 11-28 / Medium: 11-26 through 11-36 / Long 11-32 through 10-42 cage lengths
Short Cage:
Chain Wrap Capacity (teeth): 18 teeth
Largest Cog: 28
Weight: 250 g
Medium Cage:
Chain Wrap Capacity (teeth): 26 teeth
Largest Cog: 36
Weight: 262 g
Long Cage:
Chain Wrap Capacity (teeth): 32 teeth
Largest Cog: 42
Weight: 271 g

$79.99
The Box Three Rear Derailleur simplifies the features found on the Prime 9 Box One and Two rear derailleurs making for a fully featured wallet friendly rear derailleur. Including a Limited Slip Clutch, Sealed bearing pulleys and a solid construction Box Three Rear derailleurs are compatible with 11-46 and 11-50t derailleurs making it one of the most versatile derailleur offerings for Prime 9.

$123.00
The SRAM Rival 1 rear derailleur is engineered for smooth, reliable shifting action, delivering 100% of what you demand. By eliminating unwanted chain movement, X-HORIZON shifts faster, reducing shift effort and chain slap.
- X-HORIZON design reduces shift force while eliminating ghost shifting and chain slap
- Large upper pulley offset automatically adjusts chain gap
- Sealed cartridge bearings and aluminum cage
- Technologies: X-HORIZON, EXACT ACTUATION, X-SYNC, ROLLER BEARING CLUTCH, Cage Lock
- Medium cage: 11-26 through 11-36 cassettes, 269g
- Long cage: 10-42 cassette, 275 g

$230.00
SRAM's X01 Rear Derailleur packs a massive amount of technology into its compact, lightweight body. This 11-speed gear changer uses a “horizontal parallelogram” design that limits all movement to the horizontal axis, reducing the force it takes to shift. The Type 2 clutch is brilliant. This self-lubricating, one-way roller clutch controls your chain tension to eliminate chain slap and give you smooth, consistent shifts over any terrain. For quicker, smoother, more exact shifting, the large upper pulley's offset design maintains a consistent chain gap across all gears.

$44.99
Replacement pulley set with ceramic bearings. Compatible with 7,8,9, and 10-speed Campagnolo, Shimano, and SRAM drivetrains.

$24.99
Affordable and lightweight Shimano-compatible rear derailleur. Compatible with cassettes up to 36T.
Features:
- 8/7/6-speed
- Short Cage max. front difference: 12T
- Shimano-Compatible
- Responsive and reliable parallelogram push-rod design
- Composite outer link
- Composite pulleys
- Weight: 240g (Short) / 269g (Long)

$29.99
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.

$29.99
Enjoy quality and reliability with the Shimano Tourney 6/7-speed rear derailleur. It makes use of Shimano SIS, HyperGlide, and Double Servo technologies for smooth, accurate shifts.
- Maximum cog size: 34t
- Total capacity: 43t

$39.99
Enjoy quality and reliability with the Shimano Tourney 6/7-speed rear derailleur. It makes use of Shimano SIS, HyperGlide, and Double Servo technologies for smooth, accurate shifts.
- Wheel-type cable guide
- Maximum cog size: 34t
- Total capacity: 43t

$59.99
Shimano's Tiagra Rear Derailleur GS (10-speed) is sleek, balanced and consistent. The Tiagra 4700 series provides serious entry-level riding performance with trickle-down technology from the top shelf Dura Ace line.
- Model Number: RD-4700-GS
- Series: Tiagra
- Cassette Compatibility: 10
- Maximum Sprocket: low sprocket: 34T / top sprocket: 12T (front double) / 20T low sprocket: 32T / top sprocket: 12T (front triple)
- Minimum Sprocket: low sprocket: 28T / top sprocket: 11T (front double) / 20T low sprocket: 25T / top sprocket: 11T (front triple)
- Maximum Front Difference: 16T (front double) / 20T (front triple)
- Total Capacity: 39T (front double) / 41T (front triple)

$71.99
With a race-worthy weight and the right gearing for any situation, microSHIFT's top-of-the-line ADVENT X rear derailleur delivers high-end performance without high-end headaches. By using a 10-speed chain and wide range 11-48T cassette with predictable, evenly spaced gear steps, ADVENT X allows you to find the right gear even in challenging conditions. Add in microSHIFT's proprietary ratchet-and-pawl clutch, larger pulleys with taller teeth for better chain retention, and metric adjustment hardware, and you've got everything you want and nothing you don't.
- Compatible with ADVENT X 10-speed drivetrains only
- Compatible with standard 10-speed chains
- Ratchet-and-pawl clutch provides chain security and can be turned on and off with a switch
- Metric adjustment hardware
- Larger pulley and taller teeth for better chain security and higher ride height

$20.99
M-series rear derailleurs are designed to work with 7, 8, and 9-speed Shimano-compatible mountain and road shifters. These Mezzo rear derailleurs are light, robust, and reliable. You can count on them to get any bike on the road.
- Weight-saving aluminum bracket body and outer link
- Steel pulley cage for extra chain-rub durability
- Compatible with Shimano 7, 8, and 9-speed mountain and road systems

$271.00
The 7-speed X-HORIZON rear derailleur makes shifting smooth and reliable no matter where you ride. Engineered to maintain consistent chain gap across all seven gears, X-HORIZON eliminates vertical movement for faster shifting, reduced shift force, and an end to ghost shifting. Our new, Type-3 roller bearing clutch features a smoother torque curve for a quieter, more consistent operation and feel. The 12-tooth X-SYNC pulley wheel holds the chain in place, reducing bounce and chain slap. Additionally, CAGE LOCK technology makes wheel removal and installation easier than ever. Paired with the X01 DH 7-speed shifter, X-HORIZON forms the backbone of X-ACTUATION technology—and that means completely smooth shifting action.
- Updated design of the rear derailleur incorporates our proven X-HORIZON design and new Type-3 roller bearing clutch technology
- 12-tooth X-SYNC pulley wheels
- Large upper pulley offset automatically adjusts chain gap
- Sealed cartridge bearings

$764.00
The heart of the connected cadre. The SRAM RED eTap AXS rear derailleur is AXS enabled for easy personalization and designed for both 1x and 2x systems. Advanced chain management keeps it silent and secure no matter the terrain. The derailleur also comes with faster pulleys, bearings, motors, and signals, improving speed in every way.
- SRAM AXS-enabled for easy personalization
- Orbit chain management technology keeps drivetrain quiet and secure
- A single rear derailleur for all gearing combinations, including 1x and 2x
- Improved motor and signal travel for faster shifting
- Larger X-SYNC pulleys and ceramic bearings for increased durability and efficiency
- Compatible with existing eTap batteries
- Battery sold separately

$719.99
Shimano's unbelievable Di2 technology has made the leap to the trails with their XTR Di2 drivetrain. This rear derailleur features all of the race-day performance you've come to expect from XTR, and the unrivaled stability, speed, and performance of an electronic drivetrain. Since there aren't any cables to stretch or housing to create friction, shift performance stays amazingly perfect, delivering flawless shifts any time, under any condition. System communication with the front derailleur eliminates chain rub and, if you prefer, the rear derailleur can be optimized to use Shimano's Synchronized Shift technology.

$39.99
- Model Number: RD-R3000-SS
- Series: SORA
- Maximum Sprocket: 32T
- Minimum Sprocket: 11T
- Maximum Front Difference: 16T
- Total Capacity: 37T

$273.99
The RD-M9100 XTR rear derailleur is intended for use with 1x drivetrains. It is compatible with both 11- and 12-speed cassettes.
- Decreased rear derailleur tension at low gear position, to prevent high chain tension
- Added bumper at rear derailleur pulley cage
- Bigger 13T pulley
- Direct mount compatible
- Compatible cassette size: 10-51 (12-speed), 10-45 (11-speed)
- Total capacity: 35t (GS Medium Cage) / 41t (SGS Long Cage)

$34.99
The Shimano Altus rear derailleur brings Shadow technology and wide-range capability to 9-speed drivetrains
- B tension spring for quick and easy wheel installation and removal
- Super low-profile concept with SHADOW mechanism
- Wider linkage ensures durability and more precise shifting
- Easy adjustment and maintenance
- Direct mount compatible
- Maximum cog size: 36t
- Total capacity: 45t

$60.99
With an integrated chain stabilizer mechanism, the Shimano GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON/OFF switch for the chain tensioner.
- Adjustable chain stabilizer prevents chain slapping and drops
- Switch stabilizer ON/OFF to match the terrain
- Gravel-tuned clutch tension
- Maximum front T difference: 16T
- Silent and uninterrupted rear shifting on rough terrain
- Low cog: Max. 36T/Min. 30T
- High cog: Max. 11T/Min. 11T
- Total capacity: 41T
- Smooth and reliable mixed-surface shifting
- Compatible with current 10s road DUAL CONTROL LEVER
- Compatible with wide-range front gearing

$89.99
Shimano's Deore Shadow+ Rear Derailleur is loaded with mountain bike technology. 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. And the Shadow+ clutch maximizes chain control by virtually eliminating chain slap and excess noise with its integrated cage-tensioning clutch.
- Medium Cage (for 2x10 drivetrains)
- Long Cage (for 3x10 drivetrains)
- For use with Shimano 10-speed drivetrains
- High-efficiency drivetrain for aggressive trail riding
- Optimized gear combinations and ratios for trail riding
- Maximum chain wrap capacity: 41T (medium cage)/43T (long cage)
- Largest cog: 42T (medium cage)/36T (long cage)
- Compatible with wide range cassette
- Silent and stable for technical trail riding
- Improved stability and chain retention longevity
- Light shifting effort
- OPTISLICK cable
- Smooth and precise shifting
- DYNA-SYS compatible system
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