A lot would depend on your riding style and the terrain. I found that the gearing was too tall for me. I ride a lot of tight woods and rocky mountain trails. I lowered the gearing on mine to 13/39. It's a cheap way to make the quad more functional. If you happen to ride in wide open spaces, then obviously you wouldn't want to change.
Some guys put pipes and such on theirs. I have done no mods in that fashion, and I find that there is plenty of power for me. I also don't want to blast the guy behind me with noise. I did put nerf bars ( good investment) hand guards, and hand and thumb warmers. All make the riding experience more pleasurable.
I found that besides the gearing, the tires were the weak spot on mine. The Razrs don't do well in the mud. I put on ITP Blackwaters on the back. They hook up real well. I also put 23 inch Kenda Claws in the front to give a little more clearance in the front and middle. I'd recommend either tire if the terrain is similar to where we ride.
Hope this helps
Scott
Some guys put pipes and such on theirs. I have done no mods in that fashion, and I find that there is plenty of power for me. I also don't want to blast the guy behind me with noise. I did put nerf bars ( good investment) hand guards, and hand and thumb warmers. All make the riding experience more pleasurable.
I found that besides the gearing, the tires were the weak spot on mine. The Razrs don't do well in the mud. I put on ITP Blackwaters on the back. They hook up real well. I also put 23 inch Kenda Claws in the front to give a little more clearance in the front and middle. I'd recommend either tire if the terrain is similar to where we ride.
Hope this helps
Scott