what are some of the best and cheapest mods to do to a 400ex to improve performance thanks

 

• Adjust Throttle Cable FREE
• Remove all unnessasary weight from bike FREE
• 14T Sprocket $6 bucks
• Modified Airbox Lid $4 bucks (foam/fabric shop)or remove FREE
• Rejet (buy/swap jets w/dealer, got mine at kawasaki dealer $3 bucks a jet)
• E-Series S-Bend w/7 discs (not cheap but excellant performance if you got the cash)

rayz400ex
Honda 400EX RIDERS site:
http://home.elp.rr.com/hipo/atv/

 

Pipe, jet kit, and improved air intake (new air filter and remove airbox lid.) I wouldn't do one without the others. I have heard of the e-series pipes falling apart. I run the Duncan Double Barrel or the DMC, both the same. I love the power and throttle response, but it is too long. The grabbar never touches the ground when its stood up. After I did all that i started hitting the stock rev limiter so I installed the White Bros aftermarket cdi box.

 

cam and piston are cheaper than a pipe and give more performance.