I have a 2008 Giant Reign X1. The bottom bracket has developed play again (race face dh x type bottom bracket). I have a set of truvativ holzfeller OCT cranks that i want to install but will require me to use a Truvativ Howitzer XR bottom bracket.
I'm stuck on which one to order. There's two.
68/73 x 51mm
68/73 x 56mm
Which is the correct one? Is there a way I could measure and if so what is the proper way to measure? is it center to middle of the dual rings? Do i take into the account that there is a spacer in between the drive side cup and the bottom bracket shell and subtract?
When i purchased the raceface dh x type bottom bracket, it was simple. I just purchased the 68/73 and it came with spacers. These truvativ ones are confusing me.
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