for serious MX work, this gets dragged out occasionally. It used to be a YZ490, but has been bored out to the full 500cc, and runs a lighting circuit from an IT 175, so its as close to a WR 500 as possible. 1993 KTM300 front end fitted, 43mm Whitepower forks, Wave disc and stock KTM 2-spotter on owner-made caliper mount. FMF fatty pipe and muffler. Every engine internal replaced during rebuild, with the only exceptions being the 2 crank-wheels and the woodruff key. Modified seat, owner-built rear sub-frame (braced). This bike weighs 105kg, has a 4-speed box, and only needs 2 gears in the bush ...... 2nd and 3rd..... ;-) It is a rocket.