alright last weekend i went biking with my buddy that has a brand hemmerin new yfz450. I tried following him up some hills. the yfz made it up no problem but my rappy fell out of gear everytime we went up this one hill and everytime we got stuck and i had to razz-on-er a little. my question is, is there a rev limiter or some safety device on these things i wasnt aware of? Ive also tried it and it does it in atleast 2nd and 3rd. Thanks for any advice i recieve