I have a 87 Honda 250x and I want more power and speed. It is all stock except for K&N filter. Anyone PLEASE HELP !!

 

dependign on how much money you have to spend. I would suggest and aftermarket pipe and head pipe along with a dynojet kit also reove the air box lid and jet accordingly also changing the countershaft sprocket will give you either bottom or top end depending on what size tooth you are running. I have an 87 250x also but it is stock i use it for snow removal and have a trailer for it so i dont want to put a loud exhaust system since i dont want to annoy neighbors. I also have a 99 mojave with dynojet kit and dg rcm straight pipe its a fast 4 stroke but it is very noisy I can never get lost out in the woods with this bike