That is a Walsh build. Mike Walsh races at Dade City MX on quad nights. He builds the best stuff out there. He was a designer of the ltr450 frame for Suzuki. He just built a full custom 450 with a crf450 motor in it. Have seen it run a few times now and it has more motor than any quad I have ever seen not to mention the full Walsh chromoly frame, arms, swinger and super long travel. That 250r is top notch stuff. $28k and we can all have one.....lol
Sorry for the sidetrack....