2016 Ssr Motorsports Sx50, Great for the Kids!! - Features SSR SX50-50cc Pit Bike 2016 SSR SX50 50cc Pit Bike 2 Stroke Engine. Perfect kids starter Mini Dirt Bike. Affordable and Fun. Engine:49cc 2-stroke, air cooled Transmission: Chain Drive Start type: Pull start Tank capacity:1.8L Max.speed: up to 25 MPH Brakes: Front and Rear Hydraulic disc Shock Suspension Seat height: 19" Max.Load: 143 lbs G.W./N.W.: 51/44 lbs