The eleven tooth upper and lower pulleys with 5mm bolt-holes are designed as a direct upgrade for 12 speed Dura Ace Shimano derailleurs
It is engineered to stick to the balls and continually be pulled back into the ball path where it is needed
45 degree Angular Contact
Designed and manufactured for performance
The deep-groove design raceways allow for maximum-sized Grade 5 Silicon Nitride ceramic balls for increased contact area and improved performance and longevity
BKC-0732 - T47-External Threaded, Ceramic Hybrid, XD15 Corsa, 45 degree Angular Contact, Bearing Bottom Bracket for T47 Framesets and 30mm Cranksets (over 104 mm wide) - Blue sale The eleven tooth upper andBKC 0732 T47 Threaded, Ceramic Hybrid, XD15 Corsa, 45 degree Angular Contact, Bearing Bottom Bracket for T47 Framesets to 30mm Cranksets (for current specification spindles over 104mm wide) Enduro's top of the line BB solution, we press XD15 45 degree Angular Contact bearings into precision machined aluminum T47 cups that simply thread directly into the BB shell. Enduro XD15 bottom brackets and bearings are manufactured to the highest standards at the
