Bontrager XDR Rapid Drive Core

Bontrager XDR Rapid Drive Core
Original spare parts

Whether you're looking to upgrade your drivetrain to a newer or better drivetrain, or simply want to upgrade your wheelset, you can do it safely with genuine Trek replacement parts.
Product Details

     spare core
     Compatible with Bontrager Rapid Drive 108 hubs
     Pawls and springs are sold separately.
     Install 3 pawls/springs for 54 tooth engagement or 6 pawls springs for 108 tooth