There are a few different standards unfortunately.
Octalink is for the cheaper Shimano Cranks I think. Both SLX and the RaceFace use Hollowtech II BBs.
This is a good video to give you the idea of Hollowtech, basically, the cranks aren't attached to the BB, they just pass through it..
http://www.youtube.com/watch?v=UAqAanDsAKA
Octalink is for the cheaper Shimano Cranks I think. Both SLX and the RaceFace use Hollowtech II BBs.
This is a good video to give you the idea of Hollowtech, basically, the cranks aren't attached to the BB, they just pass through it..
http://www.youtube.com/watch?v=UAqAanDsAKA