BB-R9100 Dura-Ace HollowTech II Bottom Bracket Cups - 70mm Italian

The bottom bracket bearings for the HollowTech II FCR9100 crankset, which is the ultimate crankset for stiffness whilst keeping weight low for performance riding and racing.

Features:

• Minimal bearing interface gives superbly smooth rotation
• Distinctive style that exudes quality and perfection
• Required for installation of FCR9100 chainset thread BB cups
• Axle Standard: 24mm
• ITALIAN THREAD 70mm

Note: Use TLFC34 or TLFC24 in conjunction with TLFC36 adaptor tool for installation and removal.