Originally Posted by
bampilot06
Similar to mojo questions. The ritchey is 9 speed ultegra, on pro mavic something something rims.
If I put new 105 on it, would the 11 speed cassette fit?
Also, I can never figure out what bb I would need if I did buy the new group set. It was built in 2001, steel. The BB looks tiny.
Probably need a BSA/English threaded BB for Shimano Hollowtech II.