CeramicSpeed BB Alpha BBright Shimano Road Bottom Bracket BYOB display R:Shield anti-puncture belt helps defend

R:Shield anti-puncture belt helps defend against common road punctures

Maximum Stability & Efficient Power Transfer

With the SRAM DUB Road Wide bottom bracket for a case width of 68 mm

Threaded BB shell width: 68/73mm

Accordingly the new 12-speed groupset features of course Micro Spline and Hyperglide+

CeramicSpeed BB Alpha BBright Shimano Road Bottom Bracket BYOB display R:Shield anti-puncture belt helps defendA bottom bracket built to outlast your frame. BB ALPHA features hardened stainless steel races hand built with grade 3 Silicon Nitride ceramic balls, custom engineered seals and precision dust covers, delivering up to 500% better moisture protection, while still providing ultra low friction performance. The simplified spacer tube design and lighter cups ensure quick installation and a 10% weight reduction over previous generations. All CeramicSpeed BB