Our Universal 3M Steel Dirtbike is the ideal exhaust for 2-stroke and 4-stroke dirt bikes. It utilizes our patented Tunable Disc Technology which allows for complete tunability of sound and backpressure level. The 3” tunable discs coupled with a Closed End Cap serve as an Integrated U.S. Forest Service approved spark arrestor for endless hours of safe riding.

The durable Black Painted Steel body provides exceptional durability in this value oriented package.

THE MUFFLER DOES NOT INCLUDE A CORE. THE CORE MUST BE PURCHASED SEPARATELY.

BRACKET IS NOT INCLUDED.

The Universal 3M Steel Dirtbike exhaust is available in the following inlet diameters: 0.88”(22.2mm), 1.00”(25.4mm), 1.13”(28.6), 1.25”(31.8mm), 1.38"(34.9mm), 1.50”(38.1mm), 1.63”(41.3mm), 1.75”(44.5mm) or 2.00”(50.8mm).

Twelve, 3” discs are included with the 4-Stroke Core Kit.

Eight, 3” discs are included with the 2-Stroke Core Kit.

Adding more discs gives you more sound, flow and more horsepower.

Subtracting discs allows you to increase low-end torque and reduce the sound when needed.