- Elliptical shape for improved power transmission - Asymmetrical tooth shape for the best wear life, chain retention and mud clearance - Fits SRAM and other 3-bolt direct mount cranks - Dished ring provides 50mm chainline on GXP or BB30 / PF30 long spindle (with15.4mm drive side spacer) - Drop-Stop B rings are compatible with 10/11/SRAM 12sp chain and Flat Top/Transmission chains. Not compatible with Shimano 12 speed - Made in the USA from 7075-T6 aluminum alloy
