I run the duncan eliminator kit with pipe but i am going to put a Q pipe or HPR pipe both are new to me i just started looking up things on the web where i live i just get the internet a short time ago on the tranny dill some of that  might be a little overkill but i will just stick to the hypred bearing that caust enough my quad been sitting since 1998 because of broken frame got a new kx500 in 97 just put it on the back burner until the flame went out got the fever again.