Shimano FC-MX71 DXR Crank Set Hollowtech II

BMX / DH 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