GY6 170cc Go-Kart Engine with Internal Reverse - One Year Warranty

170cc UPGRADE DIRECT GUARANTEED FIT FOR THE FOLLOWING BUGGIES All TWISTER HAMMERHEAD 150cc Buggies with Internal Reverse All Trailmaster 150cc Buggies with Internal Reverse All ASW American Sportworks 150cc Buggies with Internal Reverse All Supermach 150cc Buggies with Internal Reverse All BMS 150cc Buggies with Internal Reverse This is a guaranteed direct fit for your vehicle above and everything bolts up identical to your original stock engine including the shifting controls.  We take a new 150cc type 6 engine, disassemble, bore out the case and install a 61mm big bore kit  Comes with a one year warranty--see details. ADD A UNI-FILTER TO YOUR ORDER AND GET A ONE YEAR WARRANTY.  YOU HAVE FOUR ENGINE OPTIONS  Engine 1: 150cc Standard stock GY6 Engine with Internal Reverse with stock transmission--GUARANTEED DIRECT FIT.   Engine 2: - 170cc GY6 Performance Engine with Internal Reverse --GUARANTEED DIRECT FIT.  Click here for details.   Engine 3: 175cc GY6 Racing Engine wit