SRAM's Apex Rear Derailleur offers durability and a long cage design capable of being used with 32t cassettes. It weighs 210 grams.

Offering the geometry and engineering of SRAM's outstanding Force Rear Derailleur but durable and more affordable stainless steel hardware, the Rival Black Rear Derailleur is compatible with 10-speed Doubletap shifting systems and weighs 188 grams.

Shimano's Ultegra Di2 Rear Derailleur offers the same incredibly quiet, incredibly precise shifting performace as Dura Ace in a simpler and more affordable package.

The 173g Force Rear Derailleur offers SRAM's 1:1 actuation ratio for fast, smooth shifting under all conditions and a stiff and light unidirectional carbon fiber cage.

SRAM's Red AeroGlide Rear Derailleur blends carbon fiber, titanium, forged aluminum and ceramic to create one of the most precise and lightest rear derailleurs ever made—only 145g.

The 105 RD-5701-S is the silver version of the 5701 series, but is otherwise identical to 5701-L model with the darker finish. It borrows stiffness and 30t max sprocket compatibility from Shimano's top-of-the-line components.

SRAM's Apex Rear Derailleur offers durability and a long cage design capable of being used with 32t cassettes. It weighs 210 grams.

Shimano's Ultegra Di2 Rear Derailleur offers the same incredibly quiet, incredibly precise shifting performace as Dura Ace in a simpler and more affordable package.

Familiar features like featherweight materials, ultra-quiet pulleys, and lightening fast Exact Actuation shifting, all with new 11-speed compatibility. 145g.

Refined actuation for crisp transitions between cogs with less lever throw required per shift. Lighter than ever at 158g.