When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
For a 400ex 2002
What would be the wiser choice? I would like to keep the motor stock. Only pipe, jet, and air box mods with filter. HELP. Also Suggest a jet size. I'm using a T4 and K&N.