Current slide {CURRENT_SLIDE} of {TOTAL_SLIDES}- Best Selling in Bottom Brackets
This BB is excellent Shimano quality as expected. However my existing bearing cup spanner for Hollowtech 2 does not fit. Hollowtech 2 standard is 16 notches x 44 mm external cup diameter. This BB has a more compact bearing to save weight and is 16 notch x 41mm external diameter. Luckily the BB comes with the necessary adapter TL-FC25 which is included so no problem. Worked perfectly with my existing spanner.
Verified purchase: Yes | Condition: New
I replaced an old square end shaft with ball bearings with this BB. I also had to change the chain set to fit the splined shaft. I think the friction is reduced but that is subjective so I can't be sure. Most noticeable though is that the chain rings run straighter even when peddling hard, meaning less rubbing of the chain on the front changer cage. I'm now making the same improvement on my other bike.
Verified purchase: Yes | Condition: New
Awesome Shimano BB, easy to install and cycle away
Verified purchase: Yes | Condition: New
It was easy to install it.
Verified purchase: Yes | Condition: New
So far running well
Verified purchase: Yes | Condition: New