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Will I notice any difference between a 5500 or 7710 octalink BB?
You will if you buy the wrong 5500, as it will destroy your cranks. As long as you get the v1, you won't notice the difference
Is the 7710 worth the extra €30?
Probably not
Is the 7700 worth more again?
Definitely yes if you like beautiful things. What's not to like about an adjustable, tunable, rebuildable BB with needle rollers for radial loads and angular contact balls for axial loads?
gbj_tester
Howard
Will I notice any difference between a 5500 or 7710 octalink BB? Is the 7710 worth the extra €30? Is the 7700 worth more again?