SRAM DUB BB30 Bottom Bracket - BB30 73mm MTB Boost 55mm Chainline Black MFPN=170-003-026 1 RC2 W/ButterCups e-Bike approved

1 RC2 W/ButterCups e-Bike approved Yes Maximum Rotor Size 220mm Damping Adjustments External begin stroke rebound low speed compression high speed compression

Hub end caps are easily replaced to fit virtually any axle standard (front includes 15x110 and 20x110 Boost end caps)

the comprehensive Pro Tubeless Kit is the perfect all-in-one tubeless tire repair system

7075-T6 aluminum aerospace grade strength

SRAM DUB BB30 Bottom Bracket - BB30 73mm MTB Boost 55mm Chainline Black MFPN=170-003-026 1 RC2 W/ButterCups e-Bike approvedSRAM 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