Universal Internal Disc Series are 3” Chrome Plated Steel internal, disc-based mufflers that utilize our patented Tunable Disc Technology. They are rated top in their class for providing maximum silencing.

Their 3.5” body diameter tapers down to a 2.125” opening. All Universal Internal Disc Series main portion of the body are 12” in length. The overall length of the body including the inlet is 15".

Universal Internal Disc Series with a Tapered End Caphave a 1.75”(44.5mm) inlet diameter (ID). It adds another 4" to the exhaust. Twelve, 3” discs are included. Brackets are not included.

Universal Internal Disc Series with a Slash Cut End Caphave a 1.75”(44.5mm) ID. It adds another 6" (measuring from the long side) to the exhaust. Twelve, 3” discs are included. Brackets are not included.

Universal Internal Disc Series without an End Cap have a 1.75”(44.5mm) or 2.00”(50.8mm) ID. Eighteen, 3” discs are included. Brackets are included.

Add 3" discs to increase horsepower, exhaust tone and flow.

Subtract 3" discs to reduce sound and increase low-end torque.

Mufflers sold with end caps do not have brackets.