Engine Brake Silencers

Walker® Mega-Flow® Noisebraker Muffler

Acoustic benefits for your truck with enhanced performance and durability.

The Walker® Mega-Flow® Noisebraker muffler combines an open-style design with OCF roving, reducing backpressure while quieting engine brake noise to legal limits.

The Walker® Mega-Flow® Noisebraker muffler saves money: the low backpressure design means increased fuel economy; the initial cost of the muffler is lower; the Noisebraker requires fewer engine brake overhauls and reduces regular brake wear; and the muffler’s improved corrosion resistance means greater durability. Get more power and less noise without sacrificing truck, engine or engine brake performance.

The Walker® Mega-Flow® Noisebraker muffler is made to fit Class 7 or 8 vehicles. The Noisebraker saves your vehicle’s regular service brakes without affecting brake performance and reduces noise to the equivalent of compliance-level muffled acceleration. Reduced-bark braking will also build a positive image for your company on the road.

* Inches of Mercury
Tests performed on a cold-flow bench. Typical results. Actual data may vary by engine.

Key Features of the Mega-Flow® Noisebraker Muffler

  1. Reduced backpressure.
    The Mega-Flow Noisebraker® muffler combines an open-style design with OCF roving to produce a muffler that reduces backpressure. And it does this while quieting your engine brake noise to legal limits.
  2. Backed By the best guarantee in the industry!
    The Mega-Flow Noisebraker® muffler is backed by a 4-year/500,000-mile warranty plus an exclusive Safe & Sound Guarantee: If you don't feel that the Mega-Flow Noisebraker® muffler meets your expectations after 90 days of use, Walker will replace it with any comparably-priced unit of your choice.
  3. Remetallized seams provide corrosion resistance!
    The Mega-Flow Noisebraker® muffler's welds are remetallized to provide greater corrosion resistance. This remetallization process is unique to Walker® and ensures that your muffler lasts longer and looks better.
  4. Embossed shell distinguishes Mega-Flow Noisebraker® mufflers from others!
    The Mega-Flow Noisebraker® muffler looks as good as it performs. With the distinctive logo embossed on the body, you can tell you're getting something special, and so can everyone else.

Read about our Warranty and 90-Day Free Ride Offer!