History of the Yamaha BansheeWiseco Engine Rebuild Kit Yamaha Banshee YFZ 350 66.00mm Bore. Wiseco engine rebuild kit yamaha banshee yfz 350 66.00mm bore. 080 crank/piston the crank pin bearings are manufactured from the highest quality, hot rolled steel case hardened to 58-62 rc to extend the lifetime of the assembly.
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