SRAM DUB English Bottom Bracket - English/BSA | 73mm | MTB SuperBoost +

Specs

Spindle Standard: DUB

Shell Type: English/BSA threaded

Shell Width: 73mm

Chainline: MTB SuperBoost+ (56mm)

Application: MTB SuperBoost+ (157mm rear axle spacing)

Compatible Cranks: SRAM DUB SuperBoost+ cranksets

FAQ

What is MTB SuperBoost+ and why does it need a specific bottom bracket?: SuperBoost+ is a 157mm rear axle spacing standard used by some MTB frames to allow wider tire clearance and improved chainline geometry. It requires a specific bottom bracket that positions the crankset outboard for the correct 56mm chainline.

Can I use this bottom bracket in a standard 73mm MTB frame?: No. A SuperBoost+ bottom bracket provides a 56mm chainline suited for SuperBoost+ frames. Installing it in a standard 73mm frame will shift the crankset too far outboard and compromise chainline geometry.

How do I confirm compatibility before ordering?: Confirm your frame uses English/BSA threading with a 73mm shell width and that your crankset is a SRAM DUB model rated for SuperBoost+ chainline before ordering.

Best For

Mountain bikers on SuperBoost+ frames (157mm rear axle spacing) running SRAM DUB SuperBoost+ cranksets who need the correct bottom bracket for the wider chainline.