I have a full season on my 08 Nytro with the MCX 180 kit, I live in Saskatchewan and ride at 1400' ft elevation to 2,000 with Shell Gold and have driven it between +5 degress Celcius and - 38 degrees C flawlessly. Have also spent two solid weeks in Revy running up to 7800' and temps between +2 to -15. MCX is awesome and has given me zero problems. I run 7 lbs Boost and Clutching was the only work and that was dialed in after the third ride out !! Hats off to MCX and to Heck with Yamaha Canada !! you snooze you lose !!!!