I installed this kit with the full manual primary gear and it delivered all the power I needed. What a difference it makes over stock. I wasn't sure if I would like it or not do to some videos I had seen but I put it on and I only had one problem out of this kit. My shift linkage would get stuck in a upward or down ward position and I had to move it back into place every time for the first 4 rides. Now everything is working just as it should and everything lined up and bolted on. I would recommend getting a clutch kit if you are planing on building your engine. I can pop wheelies all day long. lol

My Bike: 2003 DR-Z 110 with VM26 carb, ported stock exhaust, 55mm crank, 143 big bore kit, a 3" extended swing arm, 730mm front forks, 17" / 14" front/rear wheels with disk brake conversion.