New DYNOMAX Stainless Steel Cat-back Exhaust For 2009-2010 Silverado/Sierra TtrucksDynoMax® Performance Exhaust has announced a new stainless steel power-enhancing, cat-back exhaust system for 2009-10 Chevrolet Silverado/Sierra 1500 4.8L/5.3L Crew Cab Short Bed/Extended Cab Standard Bed pickups. Providing high performance, unique sound and less restriction, the new DynoMax® exhaust system (P/N 39495) for Chevy Silverado/GMC Sierra truck models provides an increase of 23 horsepower and 30-ft. lbs. of torque. The new cat-back system is available at performance retailers nationwide. DynoMax, an innovator in performance cat-back exhaust systems and mufflers, is manufactured and marketed by Tenneco Inc. (NYSE: TEN). DynoMax is one of North America’s leading suppliers of dyno-proven exhaust technologies for muscle cars, diesel and gas trucks and sport utility vehicles, and sport compact/European cars. (DJ) | 
