Hi,

I'm a reasonable experienced mechanic and but I have to research this one as I am new to external BBs. Any help would be appreciated. I've been running an Ultegra Crank on my mtn bike turned high speed commuter for two years now. I bought an external BB (Race face X type) and a Bontrager race light crankset (ISIS type spindle) to go with it. Once installed the crank bolt (non drive side) is tightened the chainrings hit the frame. I looks like I need a longer spindle. Are these integrated cranksets available with different spindle lengths? Or would I need a different BB.I played with the spacers but could not get it to work.

Thanks,
Tim