SHIMANO DURA ACE BB-R9100 ITA HOLLOWTECH II BOTTOM BRACKET over-2500 USB Rechargeable: Convenient USB charging

USB Rechargeable: Convenient USB charging (Micro-USB) ensures quick and eco-friendly recharging

The ACID chainring guides the chain safely and quietly thanks to the Narrow Wide Technology®

This results in even pad wear and easy pad adjustment with the addition of a barrel adjuster

dual colour front fender that attaches to the fork with hook and loop straps easily and securely

SHIMANO DURA ACE BB-R9100 ITA HOLLOWTECH II BOTTOM BRACKET over-2500 USB Rechargeable: Convenient USB chargingThe SHIMANO BB R9100 DURA ACE HOLLOWTECH II bottom bracket delivers precision engineering for the FC R9100 crankset. Featuring M36 x 24T Italian thread cups, this component combines lightweight construction with exceptional stiffness for competitive performance. The HollowTech II design ensures smooth, efficient power transfer with minimal friction. Compatible with frames using Italian threaded bottom bracket shells. Requires TLFC34 or TLFC24 tool