Well i need all the help i can get. I just bought myself a 2003 TRX-300-EX that i know very lettle about. I know that he had put a stroker piston and has been bored...but i dont know how much. It has a raching clutch and new sprokets and chain. It had FMF header and silencer.he wrecked it and busted alot of the plastics and the silencer...i still have the header on it. It run;s excellent and is fast...but i want it as maxed out as it can be.....what are all the things i can do to get the most performance and speed outta this bad boy????Thanks for all the help! Im clueless with this 4 stroke.