51mm or 56mm chain line

rockmonkeysc
rockmonkeysc Posts: 14,774
edited February 2011 in MTB workshop & tech
I want to order a Truvative Howitzer BB but they have 51mm or 56mm chain line options.
I'm running a Hussefelt 1.1 DH crank with 9 speed cassette on a On One Summer Season with 68mm bb shell. Hope pro 2 rear hub.
I'm sure some of this info is irrelavent but too much is better than not enough :wink:
Which chain line option will I need?

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