I was wondering what the best 440ex kit for my 400ex would be. Also what it includes and the price. I was leaning toward the Duncan National Racing 440 kit. I mostly fast trail ride and mx race my bike. Money Isn't that big of a matter. Any helpful info would be great

 

Depends on how far u want to go. 11:1 compression or 13:1 compression? This is the price diference. Then you need to consider bolt on's. Not cheap.

 

I was planning on running 11:1

 

Yea LRD does a 440 bore piston, port & polish, bigger valves, and i think thats it for $925 i think. Not really sure but LRD gets alot of power out of the ex.

 

Yes LRD does kick *** but they are expensive. I have 3k into my motor including boltons. Expensive stuff. Saving for a 460 stroker but i need 2k to get that rolling. LRD is good and they have some nice guys down there but man u can get a huge tab going there in no time. This quad stuff is way to expensive. Arg. Anybody want to donate some $$ so i can go faster?