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Beautiful Shimano GRX drivetrain
This Trainer Axle is designed to adapt your high quality bike to your wheel-on trainer
e-Bike rated
5L with printed back
Wolf Tooth B-Rad Base Mount Size:2 Slot Beautiful Shimano GRX drivetrainB RAD Bases are the foundation for the B RAD system, as the rest of the system accessories mount to them. These allow you to move bottles to make room for frame bags, move bottles away from suspension shocks, create space to mount additional bottles and or bags to the same bottle mount. Repositioning uses existing bottle mounts on frame Lightweight, durable, rust proof materials Customize storage to your specific needs with flexible B RAD system B RAD