sorry, wrong forum but i tryed the kawasaki side, nobody helped. my buddy is looking for a inexpensive exhaust option for his kfx 400. does somebody make an end cap for it that works good like the ds end cap???

 

This weekend I installed a dynojet kit a K&N filter and took the end cap off and gutted everything out of the endcap that you could and then used a dye grinder to open up the inside it still looks stock but it rips for a 400 it made a night and day differance.

 

No end cap for the KFX... the real problem is the head pipe... have a look at it, its tiny. Its kind of expensive but I would save for the full system, your buddy will see some nice gains.