DG Performance Exhaust Muffler

DG Performance Exhaust Mufflers: Race-Proven Performance Since 1974

DG Performance has been synonymous with powersports exhaust engineering for over five decades. Founded in 1974 in Southern California, the brand built its name by backing legendary motocross racers and engineering the exhaust systems they actually competed on. That race-bred DNA flows directly into every muffler DG produces today, making their exhaust mufflers a trusted choice for off-road riders, dual-sport commuters, and ATV enthusiasts alike.

What Sets DG Performance Mufflers Apart

DG Performance doesn's just build mufflers — they build mufflers with a clear engineering philosophy: improve airflow, reduce weight, and give riders control over their sound level. Every design traces back to the principle that a freer-breathing engine produces better throttle response, more power, and stronger torque across the RPM range.

DG's lineup covers several distinct muffler platforms, each engineered for a specific type of rider:

• V2 Series Slip-On Muffler — The V2 features an aluminum body, TIG-welded components, a stainless steel inlet tube, and aluminum end caps. Weighing in at approximately 5.5 lbs, it delivers a significant weight savings over stock exhaust systems while improving engine breathing and output.
• RST (Reduced Sound Technology) Muffler — Engineered specifically for dual-sport machines, the RST muffler runs as quietly as 89 dB at 3,200 RPM. A redesigned internal baffle dissipates sound waves efficiently and also extends the interval between repacks — a practical benefit for riders who spend long days in the saddle. The RST includes a stainless steel mid-pipe, a USFS-approved spark arrestor, and an aluminum end cap.
• Quiet Core Inserts — For riders who want a single muffler that can adapt to different environments, DG offers four different Quiet Core Inserts sold separately, allowing users to dial the sound profile down from the standard ~98 dB rating to a level suited for trail riding or noise-restricted areas.

USFS Spark Arrestor: Trail-Legal Out of the Box

A key practical feature across the DG muffler lineup is the inclusion of a U.S. Forest Service certified spark arrestor. This means riders headed into national forests or fire-sensitive riding areas can bolt on a DG muffler with confidence that they're meeting land-use requirements — without needing an additional insert or modification.

A Legacy Built on Championships

DG Performance's credibility in the exhaust space isn't just marketing history. The brand sponsored and equipped some of the most celebrated names in early American motocross, and those same manufacturing techniques — the same jigs, the same construction methods — are still in use today for many of their exhaust products. When you choose a DG muffler, you're choosing a product line that has been pressure-tested on racetracks and trails for generations.

Whether you ride a four-stroke trail bike, a dual-sport machine, or an ATV, DG Performance's muffler lineup offers an upgrade path that balances real performance gains with practical trail-day considerations like sound compliance and spark arrest. Browse the full selection of DG Performance exhaust mufflers to find the right fit for your machine.