Bell, I have the stock front sprocket with the 38 on the rear. K&N drop in filter. 5 Univents on the back face of the box. W/B with 8 discs, and quiet core. Jetted up to a 160. Recently I installed an additional 4 discs on the silencer, but haven't had a chance to run it other than the DB testing. No matter what way you use to get additional air into the box, it's gonna be beneficial.

 

Where di dyou buy the discs for the w/b pipe? What elavation are you at where you used a 160 jet? I am thinking of putting a 38 r on also. I want more torque and snap. Where did you buy the air vents? Your much help thanks.

 

You can get the disc kit right from White Bros., or any local dealer that carries their gear. The Univents aren't a K&N product, but also a dealer who is a member of the Parts Unlimited group, or even Rocky Mtn ATV.....heck, Rocky Mtn probably stocks the discs too. I'm at 800ft.