The Intake and Exhaust that came stock on your machine are fairly restrictive. You may get by with installing just a performance muffler but in most cases, Installing a Performance Intake and Exhaust will will get more air into the engine to raise the RPM's which means more Horsepower.
When you add more air, you'll need more gas which involves a rejet of your carburetor. This is an easy process and we have the info and parts to help you through it! You may want to select a Stage-1 or Stage-2 upgrade kit which includes additional components to complete your upgrade.