Seller notes

Stroker Crankshaft Assembly (+4mm, 691cc) Fits 2007 Yamaha YFM660F Grizzly 4x4 Stroker Crankshaft Assembly Hot Rods 4180 (+4mm, 691cc) Free Fedex Ground Shipping! Hot Rods heavy duty drop-in stroker crankshafts Not only do these stroker cranks bring about a heightened level of performance and increased displacement, but they do so without costly case machining, custom cams chains or spacer plates Utilizes the engine's stock piston All stroker crankshafts are sold complete and ready for installat...

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