It's bone stock. The only thing here in Europe Is that to make the quads street legal they apply to It some sort of "modification" to make them 14hp and limited to 80kmh. Basically they take a stock raptor and put on It an ECU locked to 80kmh(45mph), a spark arrestor waaaay more blocked, basically Is totally blocked and the exhaust's gas can go out only through an hole of 2 inches of diameter and they put a non unscrewable srew in the throttle. I removed all these mods with the original ECU and spark arrestor and breaking the screw, so the gas Is 100 percent now, the only thing Is the muffler, they filled It with something and I don't know how much they filled it, but I will change It with a slip on very soon. That's all, so to answer your question, no I don't have any mods that, at least, I don't know. The machine runs strong, but I've never used 100 percent throttle, I've used the quad limited at 14hp with all that mods only during the break in(as expressed from my deliver) so for 9 hours (idk why but I reached 240miles very soon, so totally my break in was of 9hours like that). The quad now has 13 hours. Tomorrow I'm going to do a compression test to see if everything Is ok. Crossed fingers.