I bought a set of 2021 KX450 forks and am attempting to fit them up using the KX450 brakes and front wheel with spacers and axle. By just holding them next to the 500 forks, they appear to have a bit longer stroke when the axles are lined up, also the height runs up higher and may nearly hit the bottom of the handlebars. I’m concerned when the forks bottom, they may hit the fender and cause an endo. Also not sure if the axle lug offset is the same as stock, and if different, the triple clamp offset may have to be altered to keep the stock geometry.
If anyone has mapped out this conversion and can offer any advice, I’d greatly appreciate the help! Thanks, Joe