Shimano XT M770 / SLX M660 BB-70B HollowTech II Bottom Bracket Set - English Thread
Shimano BB-70B XT M770/SLX M660 HollowTech II Bottom Bracket Set.
This vital part joins your cycle to the crankset and allows free rotation, boosting your efficiency.
Even better, the use of sealed cups means it easily deflects water and dirt, meaning it lasts for longer.
Free Build and Delivery
Free delivery is available on all bikes sold by us. To find out exactly when you’ll be able to get your new bike, take a look at the available delivery options in the checkout.
All of the bikes we sell online are built and inspected by our qualified mechanics – just like when you buy a bike from one of our stores. All you’ll need to do when you receive the bike is straighten the handlebars and attach one of the pedals. This service is free, and included every time you buy a bike.
To find out more about bike delivery, as well as our easy returns service, head over to our delivery and returns page.