DUB PF30 73mm (55mm Chainline)

SRAM DUB PF30 Bottom Bracket – 73mm (55mm Chainline)

The SRAM DUB PF30 73mm bottom bracket is built for frames using a PressFit 30 shell and a wide 73 mm bottom-bracket width. Designed for SRAM’s 28.99 mm DUB spindle, this BB offers improved durability, smoother rotation, and broad crank compatibility—all while maintaining an optimal 55 mm chainline for modern MTB and gravel drivetrains.

Featuring sealed steel cartridge bearings housed in precision-machined PF30 cups, the DUB PF30 BB ensures reliable performance in tough riding conditions. A great choice for riders seeking a durable, low-maintenance upgrade or replacement.

Specifications

• BB Shell Type: PF30 (PressFit)

• BB Shell Width: 73 mm

• BB Bearing: Steel (sealed cartridge)

• Crank Spindle Diameter: 28.99 mm

• Interface: DUB

• Cup Diameter: 46 mm

• Primary Color: Black