The new SRAM DUB bottom bracket series has a simple task: connect your cranks and protect the smooth, long-lasting application of power to your drivetrain. To enable this unique focus, we've designed the DUB spindle to be the only true unifying component. Oversized to work with all crankset standards. For greater crank compatibility. For better protection against the elements. For longer-lasting performance. To be stronger, smoother, simpler. Now, back to the ride. THINGS TO REMEMBER Oversized spindle to work with all crankset standards. Much lighter than the PFGXP system Easier installation by allowing you to press the bearing cups into the frame Features and benefits Easy installation Two fully sealed cartridge bearings conforming to ISO 4210. Specifications BB frame interface: Press Fit (MTB: 89/92 mm) BB crank interface: DUB Bearing type: Standard Spindle diameter: DUB Cup material: Steel