The T45 Threadfit Bottom Bracket was developed by Colnago to deliver the dual benefit of a press-fit system in tandem with the reliability and security of a threaded interface. The CeramicSpeed T45 bottom bracket for Sram's new DUB standard offers a high performance replacement for the standard offered by Sram and improves performance and speed by reducing drag, while simultaneously increasing service life thanks to the high quality Ceramic Ball bearings. With an integrated dust cover for all models, CeramicSpeed's T45 Bottom brackets for DUB yield a snug & secure fit that also fully protects the face of the bearing to deliver exceptional performance without any sacrifices. Ceramicspeed hand-built bearings carry the load from crank to frame with un-paralleled durability & efficiency. Available in both Standard CeramicSpeed balls with their 4 Year guarantee and 75% reduction in drag or their Coated version with even better performance and longer service life.