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What's the difference between BB91 and BB71 please thank you ! 😀
20?
Probably width of the shell in mm?
its a range thing, when they first came out they were 91-Dura.
Now theres a 71 which is more Ultegra/XT.
its the 1 or a 2 that will catch you out. a 91 will not fit a hole for a 92.
However, both the BB-91 and BB-91 are for BB92 fitments.. 😯
Don't you love standards..
More a case of "don't you just love product level naming conventions with names/numbers almost identical to the BB standard, that are so similar it's impossible not to get confused".
So the 91 is better than 71 then ? Bit like XTR Vs XT ?
yeap. whether you can spot the difference i don't know.
Better quality ? Seals bearings or not ?
"whether you can spot the difference i don't know."
this