Colnago launches new bottom bracket standard with new C64 (sort of)
New ThreadFit 82.5 bottom bracket developed with Ceramic Speed ditches press-fit sleeve
www.bikeradar.com
A un certo punto dice
“It’s not very clear from these pictures, but an alloy sleeve is bonded into either side of the bottom-bracket shell, rather than threading directly into carbon, which would be insane.”
quindi la filettatura è su un corpo in alluminio