i have on my raptor full skid plate ,razzr tire, a handle bar, nerf bar and i want a no whats should be my next modification i have 400$ any sugestion thanks

 

Get a slip on, jet and a air filter for it for some more basic power

 

ok but a realy cant put a pipe because of very strict rules about noise , all my friends have pipe and have a lot of problemes with that any other suggestion thanks

 

pipes would be good but you can't have the sound
but an airfilter and prober jets would be good
you can get a high commpression piston but i don't know how much those cost
you could also add graphics, bumper and other stuff but that isn't going to add any power

 

I have the Sparks X6 with the spark arrester & stainless head pipe, It really picks up the power, has great mid range & rips on top.

You can remove some of the discs to quiet it down & that also picks up the low end.

It was $550 but it's cheaper if you don't go stainless.Here's the Sparks web site You get what you pay for with Sparks, They're great looking, Extremely well built, make great power gains (I got 43.1 HP on a Dynojet automotive dyno) & the guys at Sparks are great to work with.

I used the Dynojet kit on my Raptor, it gave a noticable improvement in mid range throttle response.