Shimano Dura-Ace R9150 Di2 Rear Derailleur 11-speed spd-sl carbon-reinforced shell for longevity and

carbon-reinforced shell for longevity and all-day riding efficiency

Lighter and stiffer cassette sprocket construction reduces inertia and increases acceleration

Complete your PRO LT mountain bike cockpit with a PRO LT Stem

its C60 steel inner links have a Nickel-Teflon surface treatment to withstand the higher rate of wear they are subject to

Eyelet Mesh micro fiber

Shimano Dura-Ace R9150 Di2 Rear Derailleur 11-speed spd-sl carbon-reinforced shell for longevity andThe DURA ACE 9100 derailleur blends an aerodynamic SHADOW design with enhanced range options in a lightweight, attractive mechanism aimed at discerning road cyclists. The RD 9150 DI2 version offers the digital precision of SHIMANO electronic shifting and synchronized shiftin Ergonomic shifting operation without stress SHIMANO synchronized shift Low profile rear derailleur design SHIMANO SHADOW RD Race endurance for less damage in crash Maintains