Has anyone modified their quad (specifically a Prairie 650) with High Lifter's High Performance Kits / Clutch Kit or any of its individual parts?

It includes a Big Gun Exhaust, Dynojet Jet Kit, K & N Air Filter, Breather Hose, and NGK Spark Plugs or the clutch kit?

Living in AZ, I don't often find mud. Most of my riding is trail and hills. So mostly I'm looking to add SPEED! Did any of these mods improve low and mid range power?

Was there any loss of top speed or increase in noise?

Also, my stock tires are about warn out. Any sugestions on a good after market tire for trail rideing. I was thinking of BearClaws

I want to make sure I cove all my bases befor I laydown $500+

 

ANY aftermarket exhaust that adds power, will add noise. This is just part of life.

 

I realize there will be an increase in noise. I just don't want it to be on the offensive side.