- HollowTech II integrated bottom bracket design uses a wide bearing placement with a large axle diameter for increased stiffness, efficiency and added durability
- 70 degree spider arm for optimal rigidity
- 11-speed DYNA-SYS11 SM-CRM70 chainring
- SM-CRM70 chainring teeth feature Shimanos new Dynamic Chain Engagement technology offering enhanced chain retention, driving rigidity and highly efficient
- We recommend that the bottom bracket is initially installed by a bike shop to ensure perfect facing and fit
- For use with 11-speed HG-X MTB chains only
- With a 50 mm single ring chain line for use in conjunction with 135 / 142 mm O.L.D.
- This listing is for the Right hand side only, BB and locking ring are not included
Whether you need some help with a product query such as sizing or have questions and comments about our services, our customer services team is here to help. You can contact us by phone, email, or live chat.
Phone: 01384 476 267
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.