Mazzucchelli reigns supreme but this crank definitely has some BDC con rod clearance issues on them 77 50V cases. Super nice crankshaft but just needs a lil work.
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Great Crank
June 18, 2015
taco eater :
brian schulz from cranston, RI United States
rebuilt an av7 stock bike for someone who just wanted 35mph and reliability. This crank dropped right in without any issues and without having to modify the cases.
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Lack of quality controll.
March 26, 2013
taco eater :
Deron Miller from San Diego, CA United States
Installed the crank only to find out the big end of the rod was rubbing the crankcase. Had to split the cases and clearance the assembly.
Rub one out 
Great Crank 
Lack of quality controll.