

Also on my old xr400 I had I fitted universal box vents to let more air into the box, would this help the sorm? or would it run dodgy ,Ive not fitted a k&n yet or dyno jet ,im just not sure if its worth it for the gains Id get from the price ,Any advice would be great

Im not bothered about top end speed just 0-120 say ive got a 15 tooth sprocket yet to be fitted what else can I do

I now have two tall stacks fitted new air filter and upgrade plugs
