Difference Between ZF, BF1, BF3 & Electric Power ZF: With the ZF system, you must move the shift lever to switch between forward and reverse. The reverse gear is actively engaged. BF1: With the Brake Freewheel (BF1), you do not need to shift. You can drive forward and reverse simply by pedaling in the desired direction. At the same time, the integrated back-pedal brake allows you to stop gently and safely. BF3: The Brake Freewheel with 3-speed gear system allows forward and reverse driving without manual switching. The integrated back-pedal brake ensures particularly safe and comfortable braking. The 3 gears provide the right transmission for any terrain. Electric Power: The Electric Power system supports you with an electric motor while pedaling. You can adjust the assistance level to match your needs. A practical start assist makes pulling away easier, even on inclines. Safety and Warning Instructions: Are you ready for your next go-kart race? Your challenge is about to begin! Grab your DINO CARS CAMARO, check the tire pressure and chain tension — and off you go to the track. The DINO CARS CAMARO is all about safety and comfort. The sturdy steel tube frame and air-filled offroad/broad tires with ball bearings ensure fast and smooth driving. The 6-position adjustable seat makes this go-kart suitable for children and adults from 5 to 99 years. The **front pendulum axle with extra-large travel** keeps all four wheels on the ground — even on uneven racing surfaces. assembly Instructions Download assembly instructions Technical Explanation of ZF Hub The product shown in the image may differ from the original. technical data Download technical data Instructions Electric Power Drive Download Instructions for Electric Power Drive