This may be dumb question, but I've never even touched a multi-ring crankset. So....my buddy wants to sell me his new Tru Vativ XO crankset with double rings. I only want to use it as a single for DH. Is there anything I need to know? Is it the same cranks, just spaced or something? Or is there some real difference I should know about? I did notice that the spindle end on the crank arm looks different. I think that's what made me wonder. Are the arms or spindle different? Cause now that I look...even the spider looks different...
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