2016 SSR Motorsports SR70 Semi, Brand new SSR 70cc dirt bike!! 2016 SSR Motorsports SR70 Semi Engine Type 72cc Bangen®, 4 Stroke, Single Cylinder, Air Cooled Bore And Stroke 47mm x 41.4mm Carburetor 16mm Max Output 4.69 hp @ 7500 rpm Ignition CDI Start Mode Kick Start Transmission 4-Down Semi-Automatic