Super Charge your Super Boost Get the optimal chainline and clearance for your Super Boost (157mm) hubs with the standard Race Face136mm spindle. Or a handy extra 3mm of chainline on your Boost (148mm) hubs. Smooth.
Durable versatility Crafted from a 7075 alloy plate for stiffness and strength, the Race Face CINCH interface (compatible with all CINCH cranks) makes it easy to swap in different sizes to customize your SHI -12 speed drivetrain.