BIKONE DCTech T47 Asymmetric bottom bracket for Sram Dub cranks is designed for cyclist who demand the best in performance and durability, wheter you are teckling tough mountain trails or cruising on roads. Thanks to our Dual Cup Technology (DC Tech) and the highest quality steel bearings, you will experience the smoothest of rides.

For Sram Dub Wide cranks it is necessary to purchase a Dub Wide Adaptor Kit

See the assembly instructions and spacer list here

For a correct compatibility, mountain cranks should be always mount on mountain frames and road cranks on road frames.

DCTech T47 External for Sram Dub cranks is designed for cyclist who demand the best in performance and durability, wheter you are teckling tough mountain trails or cruising on roads. Thanks to our Dual Cup Technology (DC Tech) and highest quality steel bearings, our bottom bracket will make you experience the smoothest of rides.

For Sram Dub Wide cranks it is necessary to purchase a Dub Wide Adaptor Kit

See the assembly instructions and spacer list here

For a correct compatibility, mountain cranks should be always mount on mountain frames and road cranks on road frames.