slip on exaust

[snowrider]

just wondering what the best exhaust is the best 4 a 400ex. Also what jets should i put in a carb when i have a k&n and white bros exaust ?

[tryken]

That is a very common question. The jet question is going to very from quad to quad. Try using the search portion of the website.

[250EXking]

jmo, k&n jet kit. with k&n air filter, best pipe for the 400ex is probally the x-6

[Chanman420q]

full system id go hetrick, lrd or x-6 and for slip on id get an HMF