These lightweight aluminum rings, optimized for cross-country riding, are machine-sculpted in Race Face's BC factory, not far from the famous North Shore rides.
- CNC machined from 7075-T6 aluminum.
- Race Face's patented S.H.I.F.T. technology maximizes chain to ring surface contact areas for optimum shifting.
- Hardwearing steel S.H.I.F.T. chips for dual action up-shifts.
- Four-bolt is 104mm 32, 44T.
Bolt circle diameter
Bolt circle diameter (BCD): the diameter of an imaginary circle that intersects the centre of each chainring bolt.