well I put on amother 145 miles total on 2 sleds today.Both sleds running great. Got to luv them 600 triples ..they are tough.Just gave her today ,usually always pinned to the bar.Did a few wild jumps..ski's pointed straight up,landing on back end...skid still intact...scary jumps.Got the old SXR600 to about 90 mph today..not to shabby.SRX only got to about 103..so with almost 50 HP less ,that 600 is pretty cool..plus easier to throw around in drifts and jumps and climbing. I can now see that a 700 SXR with tripple pipes could beat the heck out of a SRX...and less maintenance with PV's and such.The SRX today just killed my body,way to rough handling of a sled..that has to stop.,to old for that sled anymore.I can ride the 600 all day long and my back is happier for it..would seriously luv to part out the SRX and use the money f to adapt my SXR600 into a 700 with triple pipes..then I could really go fast and smoother at least..will think about it this Summer.