A lightweight hollow axle bottom bracket that runs on three sealed cartridge bearings, two on the drive side and one on the non-drive side.
Italian quality and craftsmanship, with light alloy cups and a hollow chromoly steel axle, designed for Record or Chorus square taper from 1995 on.
The unique axle taper on this bottom bracket means that they are not compatible with Shimano.
FEATURES:

CUP THREAD: BSA (1.37" x 24 tpi) or Italian (36mm x 24 tpi)
MATERIAL: 7000 series aluminium alloy
AXLE: 17mm Heat Treated Hollow chromoly axle
AXLE LENGTH: 102mm with no offset
WEIGHT: 220g

CAMPAGNOLO PART NUMBERS
CP810: BB99-CH02IT (102mm Italian)
CP811: BB99-CH02BC (102mm BSA)