I have a supertrapp pipe I didn't notice a real big hp gain untell i opened up the air box and rejeted...now i noticed a big gain and yes i did beat 03 blaster with pipes and vforce reeds. is also have a 14 tooth sprocket in the front

 

yeh and a jet kit runs around 60. you can use your stock filter but cut a hole in your air box lid.. the jet kit will have detailed instructions on everything....

 

I just wish there was a better way of opening up the air box without cutting holes in it right away... I just dont like the idea of mud flying all over my filter thanks

 

If I get My 4 wheeler serviced and get them to jet it how much do you think that will run me?