The new SRAM DUB bottom bracket series has a simple job-connect your crankarms and protect the smooth, long-lasting application of power to your drivetrain. To allow that singular focus, we've engineered the DUB spindle to be the one true unifying component. One oversized spindle to work across every bottom bracket standard. For better crankarm compatibility. For better protection from the elements. For longer-lasting performance. To be stronger, smoother, simpler. Now, back to the ride. SPECIFICATIONS Application: MTB, Road, Cyclocross, GravelSeries: DUBType: BSAShell Width: 68/73 mm, 83 mm, 100 mmAxle Diameter: 28.99 mmTechnical Information:Bottom Bracket Cup Material: aluminiumManufacturer Part Numbers:BSA 68/73: 00.6418.015.000Note: to mount this bottom bracket a ParkTool tool can be used. Contents:BSA 68/73:- 1 x SRAM DUB BSA bottom bracket- 2 x inner spacers, 2.5 mm (for BSA 68)- 1 x outer spacer (r), 2 mm- 1 x outer spacer (r), 3 mm- 1 x outer spacer (r), 4.5 mm FAQ What is DUB?DUB is a 28.99mm crank axle standard from SRAM. There different DUB BBs to fit most frame interfaces. Will this fit my bike?This BB will fit any bike with a BSA73 or BSA68 threaded bottom bracket shell. Check your frame specs if you are unsure what BB system your frame uses. Will my cranks fit this BB?Any DUB cranks will fit this BB. Note that GXP/30mm/24mm will not fit this BB, so even if this BB fits your frame it is important to make sure this is the correct BB for your cranks.