SRAM DUB T47 is a threaded bottom bracket for T47 shells — the large-diameter threaded standard (47mm inner diameter) that combines the serviceability of a threaded interface with a shell bore wide enough to accept oversized bearings. T47 is increasingly common on performance road and gravel frames and offers the stiffness of a press-fit shell without press-fit installation.

Highlights

• DUB bottom bracket for T47 threaded shells
• 47mm threaded shell bore — larger bearings than standard BSA, no press fit required
• 68mm and 86mm shell width options
• 28.99mm DUB spindle — compatible with all SRAM DUB cranksets
• Threads in and out — simple installation and removal

T47 — threaded and stiff

T47 was developed as a response to press-fit reliability issues — it uses the same large-diameter shell bore as PressFit (for big bearings and high stiffness) but with a threaded interface that can be installed and removed with a standard bottom bracket tool. No press, no creaking risk, full serviceability.

Fit and compatibility

T47 threaded bottom bracket. Fits T47 shells only — not compatible with BSA, PF, or BB30 shells. Compatible with SRAM DUB cranksets. Confirm shell width (68mm road / 86mm MTB) and thread standard before ordering.