The SRAM DUB BSA is a threaded bottom bracket for English/BSA 68 and 73 mm frames and SRAM DUB cranks.

What it's for

Use it to install a DUB crankset on a threaded mountain bike frame, or to replace a worn DUB bottom bracket.

How it works

DUB: one oversized crank spindle that fits every bottom bracket standard. SRAM designed the spindle, bearings, crank, and chainring as one system.

Gutter Seal: a seal design that keeps water and grit out of the bearings with low drag.

Sealed cartridge bearings sit in cups outside or inside the frame shell, depending on the standard.

Compatibility

• Fits: English/BSA threaded shells, 68 or 73 mm
• Crankset: SRAM DUB MTB
• Does not fit: PressFit, BB30, or T47 frames; GXP or 30 mm spindles
• How to check yours: look for threads inside the shell and measure its width

Setup and installation

• Use the spacers SRAM's DUB chart calls for with your shell width and crank
• Follow SRAM's DUB Cranksets and Bottom Brackets user manual for torque and grease points

Specs

• Shell: BSA 68 or 73 mm
• Spindle: DUB
• Cups: aluminum
• Bearings: sealed cartridge
• Weight: 76 g (68 mm shell with spacers)
• Part number: 00.6418.015.005