Please advice: XTR M900 (BB-UN90/91) spindle length on Merlin Mountain

foxb13

Retro Guru
Hi,

Any Merliner out there with Shimano XTR M900 setup?

The CS-M900 crankset is normally paired with a BB-UN90/91 bottom bracket with 107mm spindle length (for a 68mm shell) to get the recommended 47.5mm chainline. But because of the 34.9mm oversize seat tube on the Merlin Mountain, will the FD-M900 front derailleur be able to go to the grannie gear or will it hit the seat tube first, requiring the longer 113mm (or was it 112.5mm?) spindle as a solution?

Thanks!
 
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