The Bikone DCTech T47a Asymmetric Bottom Bracket - SRAM DUB is designed for cyclists looking for performance and durability, whether in the mountains or on the road. Thanks to Dual Cup Technology (DC Tech) and very high-quality steel bearings, it ensures exceptionally smooth pedaling.

For optimal compatibility, road cranksets should be mounted on road frames, and mountain bike cranksets on mountain bike frames.

Mounting specifications

• Crankset diameter: 29 mm (Sram Dub)
• Case width: 77 mm (road and mountain bike compatible)
• Frame diameter: T47
• For threaded frames
• Compatible with standard T45/T47 tools (Outer diameter: 52 mm / Inner diameter: 48.2 mm / 16 notches)