Fully machined in Race Face's BC manufacturing facility, these rings have almost every surface sculpted by precision CNC tools. Their patented S.H.I.F.T. technology allows for extremely aggressive shifting, and ensures lightning quick upshifts and smooth downshifts. While the rings were designed specifically to work with 10-speed drivetrains, they are equally compatible with 9-speed.
- Made of 7075 aluminum.
- Road standard 130mm bolt circle diameter.
Bolt circle diameter
Bolt circle diameter (BCD): the diameter of an imaginary circle that intersects the centre of each chainring bolt.