SHIMANO ULTEGRA Di2 Shadow Rear derailleur helmet and reduce the chance of

and reduce the chance of injury by optimizing hip

Casing: 120 TPI for 26"

Thoroughly rinse drive chain area before application

Spray straight onto your drivetrain to get rid of grime

SHIMANO ULTEGRA Di2 Shadow Rear derailleur helmet and reduce the chance ofNow simplified with a single derailleur cage length, the new 12 speed Shimano ULTEGRA R8150 rear derailleur packs our fastest, most precise shifting into a more approachable option. With our fastest, most accurate shifting, the new 12 speed ULTEGRA R8150 rear derailleur is more versatile than ever thanks to a single cage length option that is compatible with 28 34T low sprockets. FEATURES Our fastest ever rear shifting, 58% faster than RD R9150