I got a 04 Rancher 4x4, will a ket kit and uni air filter help with power with stock exhuast?

 

yes it should it helped with my 00 rancher im running a uni filter and a dyno stage 1 jet kit. I used a 124 jet clip is on 4. I can pop a wheelie from sit still in 1st and 2nd and even pop it moving in 1st when i shift to 2nd.

 

I think I'm gonna add that to my list, I got to get my motor worked on, putting a new crank in with timming chain and tensioners new wrist pin and wrings. cyclinder and piston and top end is good.