Marks's engine is a 10mm Stroke (crankshaft) 89mm Bore (cylinder) that includes the following: OEM Crankcase - Billet Stroker Plate, Epoxy, Bored, CNC Ported and Trenched for 10mm Crank, 10mm Crankshaft - Forged 10mm Crankshaft, 10mm Cylinder Kit - Billet 89mm Power Valve Cylinder Kit, Ported. Intake Manifold - Dasa Billet Dual Intake Manifold with V-Force 2 Reeds, Carbs - Dual Mikuni Super BN 46's, Flywheel Cover - Dasa Billet Flywheel Cover.
