MONROE, Mi., July 21, 2010 – DynoMax Performance Exhaust will release brand-new, cat-back performance exhaust systems for gas 2007-2010 Dodge Ram 1500 and Chevrolet/GMC truck models. DynoMax is the performance exhaust brand of Tenneco Inc. (NYSE: TEN).

Available soon at performance retailers nationwide, the new systems provide performance benefits and an aggressive sound to the new trucks.

The new systems include the innovative Ultra Flo™ Welded muffler, a straight-through, unrestricted design that is dyno-proven to support up to 2,000 SCFM and 2,000 horsepower. These mufflers are 100-percent welded for exceptional life and durability, and also include exclusive Continuous Roving Fiberglass (CRF) technology to absorb unwanted interior resonance and provide a rich, deep performance tone.

The new systems include:

• 2009-10 Dodge Ram 1500 V6/V8 (p/n 39498) gas single system – includes 3-in. piping and 4-in. tips.
• 2009-10 Chevrolet Silverado/GMC Sierra 1500 crew cab, ext cab (p/n 39495) gas single system – includes 3-in. piping and 4-in. tip
• 2009-10 Chevrolet Silverado/GMC Sierra 1500 crew cab, ext cab (p/n 39499) gas dual system – includes a 3-in. inlet pipe, dual 2.5-in. tailpipes, and dual 3-in. tips
• 2007-10 Chevrolet Silverado/GMC Sierra 2500HD, 3500 (p/n 39432) 6.0L gas single system – includes 4-in. piping and 5-in. tip

The systems features mandrel-bent, 409-grade stainless steel piping that provides extended protection against corrosion. Plus, each system includes show-styled, logo-embossed stainless steel tips. Each DynoMax system includes all OE-quality hangers and accessories for a fast, easy installation.

The new stainless systems are covered by a limited lifetime warranty and exclusive 90-day Performance and Sound Guarantee, an offer that lets enthusiasts try the system for 90 days. Consumers can return the product within 90 days for a full refund of its purchase price. Additional restrictions apply and can be found at http://www.dynomax.com/.