DBKiller inserts for 4" and 4.5" hp-plus silencers,
DBKiller silencer inserts for hp-plus produce a warm and deep exhaust sound, which can be adjusted simply by modifying the component located inside them with two screws,
It allows you to control the power of your "roar",
To adjust sound levels in a matter of minutes, not hours,
Designed to be easily mounted, with general hand tools (not hammers!),