Three Prime 9 X-Wide Rear Derailleur - 9-Speed, Long Cage, Matte Black Protection The internal air-channeling works in

The internal air-channeling works in synergy with the exhaust ports

Its bolt forces are aligned with the clamp so that the body 'embraces' the handlebar – a design which is less prone to damaging lightweight bars and allows for a lighter faceplate and stem body with no sacrifice in strength or stiffness

Trainer Mode and multiple bike profiles

Squarely cuts even the stiffest compression-less housing

Three Prime 9 X-Wide Rear Derailleur - 9-Speed, Long Cage, Matte Black Protection The internal air-channeling works inThe Box Three Prime 9 Rear Derailleur is a simple, but fully featured and wallet friendly rear derailleur. It includes a limited slip clutch, sealed bearing pulleys and a solid construction. It is compatible with 11 46 and 11 50t cassettes making it one of the most versatile derailleur offerings for Prime 9 drivetrains. Prime 9 technology offers the same range as a 12 speed drivetrain, with fewer gears to shift through The limited slip clutch engages