GT 300LC engine Rotax 580Capacity Liquid cooler 290 300cc Bore Aluminium Iron liner 76 77 mm Stroke 64 mm Rod Yamaha YZ250 125 mm Transfers 125 deg. Exhaust 182 deg. Based on the Rotax SeaDoo 580 JetSki engines combined with heavy duty Gran Turismo custom crank shaft and Aprilia RS125 generator ignition. Casing, side casing, mag housing & cover, crank, Cylinder kit, Head, seal plates, stator plate, gearbox end plate, Manifold, VHSB34 carb, crown wheel, reed chamber, reed