I need some help with ny raptor because this winter it is going to get rebuilt to a 686cc with a hotcam and new valve my question is should i replace my stock crank with an aftermarket, or will my stock hold up to the abuse of the big bore. I mainly trail ride with some roads and little motocross, with some sands here and there. Thank for any remarks

 

Stock crank will prolly hold up. But if you have the thing ripped apart that far and have the extra money might as well replace the crank.

 

pm oscar660,driverdoyle or austinoneal. put a hot rod in it. oscar had a 12:1 piston and stage 2 cams and the rod let go of the piston and the crank went through the bottom of the crank. all three above have craycraft raptors-oscar and driver had 686's.