gasmask34
09-09-2007, 03:05 PM
i have a 85 atc 250r that had a 295 big bore kit, esr cylinder head topend port job. i had no complaints about that topend except it keep blowing head gasket. come to find out the cylinder needed to be decked. got it decked and if runs great. now i found a pro-x 330 bolt on kit for real cheap so i got it and took the 295 kit off. but to me the 295 kit give me more performance than the 330 kit. the 330 kit was reported by Dave Moore for racing. also the atc 250r vibrates more than my atc 500. i can't stand riding the atc 250r. who else have the bolt on 330 pro-x kit and how do you like it?