SRAM DUB Wide BB30 Ceramic Bottom Bracket - BB30 68/73mm 73 Road-Wide Black CheckoutTitle=Michelin Wild Access 29 Tire 7mm top cover = 8mm

7mm top cover = 8mm total stack

is an internal collar

Medium and Coarse abrasive levels

Tread pattern designed to increase mileage

SRAM DUB Wide BB30 Ceramic Bottom Bracket - BB30 68/73mm 73 Road-Wide Black CheckoutTitle=Michelin Wild Access 29 Tire 7mm top cover = 8mmSRAM DUB Wide BB30 Ceramic Bottom Bracket BB30 68 73mm 73 Road Wide Black. The game changing DUB family goes ceramic. While DUB has been simplifying the game eliminating compatibility frustration and confusion for years the DUB ceramic bottom bracket gives riders an additional option for even more silky smooth performance. This is a whole other level in bottom bracket friction reduction thanks to its high efficiency ceramic bearings. Whats more the