2005 vs 2007 ?
ok I bought a 2005 450r and a 2007 450er a couple of weeks ago. I adjusted the valves on both of them and changed the oil 1st thing. the 05 has a dynojet kit , no airbox lid , k&n filter, 50 pilot and a full rossier exhaust system. as far as I know that's all but cant confirm if anything else is done to the motor . the 07 has a modified lid, ncvq needle on 3rd clip , 162 main, 45 pilot , 55 leak , k&n filter and slip on hmf silencer . both bikes run good but the 05 pulls way harder from mid up and the 07 has more grunt on the low end. in a actual drag the 05 will take my 07. my question is why ? is it the rossier exhaust or am I missing something somewhere