Rear

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

Shimano's Claris 8-Speed Rear Deraileur features smooth 11-tooth pulleys, a light-action spring, and a wide outer-pivot design that increases rigidity for precision shifts every time.

The SLX M7100 series of derailleurs deliver advanced shifting performance with decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility with Shimano's new 12-speed cassettes boosts range. - Advanced shifting performance provides the confidence to enjoy any trail - Fast and shockless shifting - Hyperglide+ - Extra wide range 12-speed drivetrain -10-51T (12-speed) - Silent drivetrain in all gear positions - Decreased rear derailleur and chain tension in low gear - New bumper added to rear derailleur pulley cage - Bump Stopper - Bigger 13T pulley - Stable drivetrain on rough terrain - Low-profile design - Shimano Shadow RD+

- Model Number: RD-R3000-GS - Series: SORA - Maximum Sprocket: 34T - Minimum Sprocket: 11T - Maximum Front Difference: 20T - Total Capacity: 43T

Shimano Ultegra R8000 Shadow rear derailleur. - Sleek integrated appearance - Low-profile design - Race endurance - Optimized slant angle - Wide compatibility - Short cage covers: 11-25T to 11-30T - Medium cage covers: 11-28T to 11-34T - Model Number: RD-R8000 - Series: Ultegra - Maximum Sprocket: 30T - Minimum Sprocket: 11T - Maximum Front Difference: 16T - Average Weight: 200 grams (short cage type), 210 grams (medium cage type)

Shimano Ultegra Di2 Shadow rear derailleur. - Sleek integrated appearance - New low-profile design - Shimano Shadow RD - Race endurance - Optimized slant angle - Maintain race concentration with more intuitive shift control - System communication with front derailleur - Shimano Synchronized Shift - Wide compatibility - Short cage covers: 11-25T to 11-30T - Medium cage covers: 11-28T to 11-34T - Average Weight: 242 grams (SS type), 249 grams (GS type)

SRAM's GX 1x11 X-Horizon rear derailleur is engineered for smooth, reliable shifting action—from the larger upper pulley offset to the 12-tooth X-Sync pulley wheels. By eliminating unwanted chain movement, this X-Horizon rear derailleur 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. • Long cage • X-Horizon design reduces shift force, ghost shifting, and chain slap • 12-tooth X-Sync pulley wheels • Large upper pulley offset automatically adjusts chain gap • Sealed cartridge bearings • Aluminum Cage