Shimano R9100 Right & Left Adapter Bottom Bracket Protection •Lock Style- Keyed

•Lock Style- Keyed

Safety techs like Koroyd® and MIPS® offer protection and enhanced energy absorption should you need it

To increase puncture protection

because 24 mm diameter axle and bearings offers the best balance of rotating performance

♦Rear tire strap features co-molded strap to protect wheels

Shimano R9100 Right & Left Adapter Bottom Bracket Protection •Lock Style- KeyedShimano BB R9100 Dura Ace Bottom Brackets Be the first to rate this product Shimano BB R9100 Dura Ace Bottom Brackets Bottom bracket with small ball bearings for lightweight Advanced seal construction for smoother rotation Available in English (BSA) or Italian threading BB Shell Width: 68mm 70mm Average Weight: 65g