SRAM Red WiFli Rear Derailleur - 11 Speed Medium Cage Black CheckoutSpec= N10/N11 Elastic panels under the arms

Elastic panels under the arms and in the upper back for optimal mobility and ventilation

6 mm ID aero bars Brake Lever Comp

Custom carbon layup equalizes impact forces on both the long and short sides of the rim making both stronger

size 29" front/rear rear (Micro Spline) rim Turbine 30 rear hub Vault axle/spacing (mm) 12x148 Boost hole 28h spoke DB nipple alloy color black weight 1865g (set)

Designed to maximize the performance of Avid brakes

SRAM Red WiFli Rear Derailleur - 11 Speed Medium Cage Black CheckoutSpec= N10/N11 Elastic panels under the armsSRAM Red WiFli Rear Derailleur 11 Speed Medium Cage Black. Top of the line rear derailleur with generous use of carbon fiber and titanium for maximum performance at minimal weight. Carbon fiber and aluminum construction Ceramic bearing pulleys Titanium hardware TECH SPECS Rear Derailleur Mount Type 10x1 Standard Rear Der Shifter Compatibility SRAM Exact Actuation Cage Length Medium Drivetrain Speeds 11 Weight 152 Color Black keyword search RD4621