The SRAM DUB (Durable Unified Bottom Bracket) 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, SRAM has 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 dirt, dust and water. For longer-lasting performance. To be stronger, smoother, simpler. Now, back to the ride.

Version for Pressfit 30 (PF46) bb shells and 83 mm bb width for Cannondale Ai.

Things to Remember

• one oversized spindle to work across every bottom bracket standard
• sealed cartridge bearings
• Gutter Seal Technology drastically improves sealing against the contamination
• Significantly lighter than GXP system
• DUB is no new bottom bracket shell standard

Case width: 83mm for Cannondale Ai
Material: cups: aluminium
Weight supplement: manufacturer information