I have an 06 Attak, heelclicker in the primary and heelclicker roller secondary, 136 x 2" paddle track the rest stock ran my buddies 98 SRX, Mr Viper trail ported with a different helix in the secondary the rest stock. Smoke him till 85 - 90 and guess who is right next to me for the long haul ! Going way to fast ( on gravel road ) for my liking with driveways and so on, we both felt we beat the other. Good race. Dont count the SRX out of any race. He was the KING of the 800 CAT, 02 SRX stock, 01 SRX stock and 01 SXr piped. Not even close, even with my 280 lb *** on it ! Pulls the left ski about 6" at 35 MPH and wow does it rock from there. WAY FUN !