Shimano DXR FC-MX71 DXR crank set HollowTech II -
- BMX HollowTech II crankset for serious racing using the new external bottom bracket bearing system to maximum effect
- Lightweight yet rigid design is highly durable and incredibly strong
- HollowTech II bottom brackets bearings are mounted outboard of the frame, increasing there diameter and placing them more widely apart; this dramatically changes the load on the bearings increasing rigidity and bearing service life
- We recommend that this bottom bracket is initially installed by a bike shop to ensure perfect bottom bracket facing and fit
- Comes complete with chain ring fixing bolts and nuts
- For use with a single chainring in a choice of sizes from 34 tooth to 46 tooth
