Well, this is a little bit different . I used to drag race my quad, This one is Strictly drag, All I had to do is change the tires and swing arm length for dirt to asphalt. Alky motor, 1-3 override transmission (like pro-stock) once you let the clutch out, no need to chop the throttle to shift. 4mm stroker crank, Polaris wave runner piston. Suzuki quadracer 250. Still have it. I'm in the left lane. Doesn't even sound like I'm shifting but I am. This runs a high 12 on asphalt. someday I get it into the 11's