The SRAM DUB BSA 73 mm SuperBoost Plus is a threaded bottom bracket for English/BSA 73 mm frames running DUB SuperBoost Plus cranks. This version is for bikes with a bottom bracket mounted chain guide.

What it's for

Use it on a 73 mm threaded frame with SuperBoost Plus rear spacing, a DUB SuperBoost Plus crankset, and a chain guide plate that sits behind the drive side cup.

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, 73 mm, with chain guide
• Crankset: SRAM DUB Super Boost+
• Chainline: 56.5 mm
• How to check yours: look for threads inside the shell, measure 73 mm, and confirm your crank is the Super Boost+ version

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 73 mm with chain guide
• Spindle: DUB
• Cups: aluminum
• Bearings: sealed cartridge
• Spacers included: 4.5 mm and 6.5 mm
• Part number: 00.6418.021.000

Pairs with

• SRAM GX Eagle DUB Crankset 175 SuperBoost Black