OK,,,,, the air box is the stock 250r unit in its orignal position,,,,,, ignition is all cr500 easy to mount,,, pipe is all hand built to match the shape of the stock250r pipe (there is a reason i did this,,its called SLEEPER) stock radiators in their orignal position,,, motor mounts are fabed out of 3/8 aluminum,,,, with a stock swinger and dirt tires no problems it has so much torque that it just cooks the tires at any speed,,,, but add paddle tires in the sand and you will need at least a 6" over arm,, maybe more ,,i have a 6" arm and it handles great flys like a bird and a pleasure to ride,,,,,, 87 or newer cr500 light kits are fairly cheap 85 is the spendy one , my mods to the engine are shaved head.060,, ported for mid-topend 40.5 mm carb up from a 38 orignally my motor is a 87 i also changed trans ratios i used 4th and 5th out of a 90 cr500 to give it a little wider ratio (not a nessasary mod) they were bad so i had the option to do it,,,,,, the kicker is the only issue i still have ,, i take it off and stow it under the seat which has to be taken off to start it,,,,,,,