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Engine Kit, GX390 Stroker with 90mm Bore, 420 cc (+.200), Cast Crank Engine Kit, GX390 Stroker with 90mm Bore, 420 cc (+.200), Cast Crank

420cc Engine kit for GX390s Includes rotating assembly

Our Price: $309.99
Engine Kit, GX390 Stroker with 90mm Bore, 414 cc (+.160), Honda Crank Engine Kit, GX390 Stroker with 90mm Bore, 414 cc (+.160), Honda Crank

414cc Engine kit for GX390sIncludes rotating assembly

Our Price: $359.99
Engine Kit, GX390 Stroker with 90mm Bore, 420cc (+.200), Billet Crank & Forged Piston Engine Kit, GX390 Stroker with 90mm Bore, 420cc (+.200), Billet Crank & Forged Piston

420cc Engine kit for GX390s with Forged Crankshaft and Forged Piston

Our Price: $819.99