Unleash your beast with Khrome Werks performance inserts for 4" and 4-1/2" HP-Plus® mufflers

HP-Plus® baffles emit a deep, mellow exhaust tone that is adjustable by simply changing an insert held into the baffle by two bolts

Gives you control over your "Growl Level"

Produces deep, rich tones with the perfect balance of performance and sound

Change sound levels in minutes, not hours

Specially designed for easy installation with basic hand tools (no hammers!)