SRAM DUB BB30 Bottom Bracket - BB30 73mm MTB Boost 55mm Chainline Black weight-36g Carbon Fiber Finish

Carbon Fiber Finish

Approximate weight: 251g (Size 155mm)

Frame Mount Width 35 Bolt Mount Diameter 10

These are available in two different versions with ceramic bearings for the 180 hub and with steel bearings for the 240

SRAM DUB BB30 Bottom Bracket - BB30 73mm MTB Boost 55mm Chainline Black weight-36g Carbon Fiber FinishSRAM DUB BB30 Bottom Bracket BB30 73mm MTB Boost 55mm Chainline Black. The SRAM DUB bottom bracket series has a simple job to connect crankarms and protect the smooth long lasting application of power to the drivetrain. SRAM engineered the oversized DUB spindle to work across every bottom bracket standard simplifying crankarm compatibility. Designed for use with SRAM Boost cranksets with 55mm chainlines Gutter Seal Technology drastically improves