The sram nx crankset delivers eagle™ styling and performance to the newest addition to the eagle™ ecosystem. Designed for sram's x-sync™2 chainrings the nx crankset is engineered for complete chain control-each tooth's profile is precisely engineered to work quietly efficiently and securely with the eagle™ chain's inner and outer links. Dub™ technology features a better-engineered bottom bracket and a new spindle design which together allows for a more uniform approach to bottom bracket fitment better sealing against contamination and forward and backward compatibility. Now everyone can benefit from a new measure of performance and durability. - speeds: 11/12 - bb compatibility: dub bsa mtb 100 dub pf mtb 121 dub bsa73dub pf89.5dub pf92dub pf30 mtb73dub bb30 mtb73 - chainring size: 30 32 - crank arm length: 165mm 170mm 175mm - chainline: 49.0mm 52.0mm 66.5mm - bb spindle interface: dub - chainring material: steel - guard: no guard - bolt circle diameter (bcd): direct mount (dm) - crank arm material: aluminum - color (crank arm): black - weight based on: dub 175mm boost 32t - weight (g): 638