- HollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameters for increased stiffness and efficiency
- HollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability

Specification

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Questions & Answers (3)

Will this replace SM-FC5600 BC1.37 x 24 ROAD FG, and does it need a tool or adaptor?

By Ben

15 Sep 2017

SJS Customer Service:

Hi,

This bottom bracket is a suitable replacement for your previous one. This one uses a smaller tooling surface but there is an adaptor supplied with this unit to allow you to use the same tool as used to remove your previous unit.

Thanks.

Is this a suitable replacement for SM-BB51

By Andrew Gordon

31 Jul 2017

Currently have SM-BB51 and having trouble finding the spec for that to pick a compatible replacement.

Bike is a 2013 Dawes SuperGalaxy if that helps.

SJS Customer Service:

Hi, if you are trying to upgrade then go for another MTB bottom bracket to match your MTB chainset. Deore XT our part 38588 would be suitable. Thanks.

Replacement For Ultegra Fc6600 Outboard Cup Bb?

By David McMullen

13 Jun 2015

My Ultegra bb SM_FC6600 ( english 68mm ) has seized up. What replacement should I get?

SJS Customer Service:

Hi,

As the dimensions haven't changed in any way between the FC-6600 chainset and the FC-6800 chainset in regards to how they fit with the bottom bracket so this one you are looking at is a suitable replacement.

Thanks.