This is the Thunder Tiger Pro .46M 2-Stroke Inboard Marine Engine.:. New $169.98 (29% off). Features: * Side exhaust.:. * CNC machined components.:. * ABN piston and sleeve Aluminum piston, Brass cylinder liner tha is Nickel plated.:. * Water cooled cylinder head, blue in color.:. * Hyperutectic machined Al-Si ringed piston.:. * Dual ball bearing-supported long style SG crankshaft.:. * Two needle carburetor with 9mm bore and oversized throttle lever fo easy installation and operation of throttle linkage.:. * Three year limited warranty through Hobby Services beginning at dat of purchase.:.