Reliable shaft drive (4WD models only) transfers power to proven sealed gear differentials. Drive train components ride on smooth ball bearings. Included is a powerful .16 engine (largest in its class) with recoil starter, 2 speed transmission, manifold, and racing-type tuned pipe. Radio receiver and battery are protected from the elements with a fully-sealed radio box. Like all CEN cars, Fun Factor cars come 99% preassembled to get you from the bench to the track in no time. Add the included P&D prepainted and decorated body and you will have the ultimate "Formula for Fun" Duel suspension arms with pivot suspension and adjustable oil filled coil over shocks providing the best on track performance with unlimited adjustability. Light weight 2 speed transmission with adjustable shifting Reliable shaft drive (4wd) Super hardened ring and pinions gears Large stronger swing shafts Sealed radio and battery box Pivot ball suspension Heaby duty anodized purple aluminum 2 piece chassis Front and rear aluminum purple shock tower Ball bearing included Dual chamber tuned pipe with with high flow manifold Super heavy duty adjustable rear toe-in rods 4 wheel braking 75cc fuel tanks with fuel filter High performance teflon clutch shoes Oil filled coil over shocks Fully painted and decaled bodies Fully assembled and ready to run Many upgrades available Fully adjustable Impact CII radio