BB-set bearing assembly SRAM Truvativ BB30

High-quality bearings: the BB30 bottom bracket from Truvativ. BB30 — named for its required spindle size — cuts weight by up to 100 grams, narrows Q-factor, increases ankle clearance, and ups bearing durability. It's a fairly new standard involving different frame requirements and crank design. Along with a 30 mm spindle, it requires an oversized 68 mm or 73 mm bottom bracket shell and press fit bearings held in place by snap rings.Construction: BB30 (42x30 mm)Housing diameter: 42 mmHousing Length: 68/73 mmBearings: Standard/Ceramic Cartridge BearingsCompatibility: only for BB30 framesFeatures:- up to 12% lighter than cranksets with standard BB- larger than standard BB, less wear- stifferIncludes:Truvativ BB30 right bearingTruvativ BB30 left bearing2 x dust capsSpacer and snap ringWeight: 64 g