The Box Four Prime 9 Rear Trigger Shifter is ready to hit the trails. Compatible with Box Prime 9 speed drivetrains, this multi shift version is designed for the rigors of even the most demanding lines. Box Four simplifies things for riders who feel that 8 speeds is enough.
Features:
- Prime 9 Technology
- Comes stock with a hinged clamp
- Resin top shell
- Dual action release lever
- Includes: stainless steel shift cable






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