best motor of 06 450r

[czrider263]

OK i just got my 450 and im starting to think what i want to do to the motor. I have a good bit of money for the motor so thats not a problem or is super relieablility because it will be a mx race bike only. So i want at least 50hp so i want sugestions to get that goal. anyone like the new rossier pipe? or baldwin for motorwork?

[Kilabanshee]

This is my thought.... Get a Baldwin piston, send your head out to Dasa to get ported. I hear Dasa does an awesome taper bore to fcr carburators. Rossier short can hands down best exhaust out there for the 450r. The 06 hrc cam for the 450r is an 05 crf dirtbike cam which makes pretty good all around power. If you want something with more top end hp look at some of the high duration web cams. I really like the UM airbox I'm running. Gave me really nice throttle response using the larger 250r k&n airfilter. Estimated cost around 2500 for the works. Estimated hp put out around 51-54.....