Monobloks 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 mm Housing Length: 68/73 mm Bearings: Standard/Ceramic Cartridge Bearings Compatibility: only for BB30 frames Features: - up to 12% lighter than cranksets with standard BB - larger than standard BB, less wear - stiffer Includes: Truvativ BB30 right bearing Truvativ BB30 left bearing 2 x dust caps Spacer and snap ring Weight: 64 g