SRAM DUB Wide PressFit30 Ceramic Bottom Bracket - PF30 68-73mm Road-Wide BLK Model=TetraRack M2 Rear Rack Bearing ball material is AISI

Bearing ball material is AISI 52100 chrome bearing steel hardened to Rc 61-66

Product tips:

} Ride on asphalt and trails with a strong versatile tire

Traction Control mode

A slightly thicker tread improves the mileage of the tire

SRAM DUB Wide PressFit30 Ceramic Bottom Bracket - PF30 68-73mm Road-Wide BLK Model=TetraRack M2 Rear Rack Bearing ball material is AISISRAM DUB Wide PressFit30 Ceramic Bottom Bracket PF30 (68 73mm) 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