I’m fitting a double Raceface Turbine crank in a Ti456. it has a threaded shell. What do I need in terms of BB?
The crank arrived with a x-Type 41mm press Fit BB

Thanks

Any of Shimano’s HT2, or Race Face’s X-type BB’s (for MTB, not road) in the correct shell width should work as far as i’m aware. It may be worth getting your BB faced back to min. tolerance though, as Race Face cranks depend on BB width to control bearing preload, we started doing this on any new bikes that felt remotely tight, and warranty problems with short lived RF BB’s stopped overnight.