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Shimano Deore XT M770 / SLX M660 BB-70B Hollowtech II English Thread Bottom Bracket

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Questions & Answers (1) Q & A
- Genuine Shimano HollowTech II bottom bracket assembly
- Set includes left and right hand cups, spacers, inner cover, and inner O-rings
- Light weight seal structure helps to remove vital grams
- Sealed cups keep out dirt and water
- Maintenance free
- Compatible with 68 mm and 73 mm shell
- Durable silver anodised finish
- Easy installation
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Questions & Answers (1)
Shimano Bb70/ Bb70B Bottom Bracket
24 May 2014
Is there any difference between the BB70B which you are selling and the BB70 which I see advertised elsewhere? Bot appear to be the XT standard bottom bracket, and I cant see anything to distinguish between the two (i.e. no
SJS Customer Service:

They are effectively the same, they will work and look the same. The B option is the only one available form Shimano's UK supplier. As far as I'm aware it became the B model when the M770 groupset switched to 10spd.