Wolf Tooth T47 External bottom bracket, SRAM DUB, black
Wolf Tooth T47 External bottom brackets are designed for smooth operation, maximum durability, and easy serviceability. The unique design uses custom bearings, seals, and polymer bushings that effectively eliminate squeaking. The system combines best-in-class weather protection with optimized bearing compression for minimal rolling resistance. This variant is designed for T47 frames, where the bearings are located in cups outside the frame.
Premium bearings with ACOSUR ZNA surface treatment have both balls and races made of hardened chrome steel, which has a higher hardness than stainless steel, ensuring longer life and quieter operation. Thanks to the special ACOSUR ZNA coating, the bearings resist corrosion better than stainless steel. Combined with sophisticated sealing and the elimination of metal-to-metal contact, these formulations deliver top performance in any conditions. They are made from high-strength 6061-T6 aluminum and hardened bearing steel and designed, machined, and assembled in the USA.
- Wide compatibility with SRAM DUB 29mm bottom brackets
- External design with cups and bearings screwed outside the frame
- Adjustable width for T47 center sockets with a range of 68 mm to 73 mm
- Quiet operation thanks to polymer axle bushings that prevent creaking
- Maximum protection thanks to superior sealing against water, mud and dust
- Lifetime warranty on bearings
- Full availability of spare parts and service manuals (Right to Repair)
| Suitability | MTB |
| Mount type | T47/T47a |
| Axis type for crankset | DUB (⌀ - 29 mm) |
| Frame width | 68 mm, 70 mm, 73 mm |
| product ID | 387271 |
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