The Shimano BB-R9100 bottom bracket is specially designed for Dura Ace 11-speed cranks. It has small ball bearings to minimise weight and uses Hollowtech II technology for greater stability and rotational efficiency. The BB-R9100 is available in versions for BSA and for ITA threads.
Shimano Dura Ace BB-R9100 Threaded Bottom Bracket, (BSA / ITA)
$55.00
Product Details
Application: Road, Triathlon & Time Trial
Series: Dura Ace R9100
Type: BSA, ITA
Measurements
Shell Width: 68 mm, 70 mm
Axle Diameter: 24 mm (Hollowtech II)
