HELP! I need to know how much the distance between the BB and the cogs changes as the suspension goes through its travel on a Carbon Rush. Thank you!
dowst: Got a little cavalier with good old eBay did we?
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The only way to know for sure is to measure the distance with the shoch in.
Then undo your frame/shock mount bolt, put your bike on its side, then move the rear end so that the shock mounts are 5-3/4" apart, then remeasure the BB - axle length.