Gibson 01-05 Chevrolet Silverado 2500 HD Base 6.0L 4in Cat-Back Single Exhaust - Aluminized Ignition>Starters Patented Internal Bypass technology allows

Patented Internal Bypass technology allows for multiple zones of damping control

This 8” tall 360-degree radial flow air filter features a 4" flange and our pre-oiled Pro 5R media with five layers of progressively finer cotton gauze media for maximum performance

Connect the rear upper shock mounts and reinforce the chassis on your 1978-1987 G-Body with a rear shock tower brace from BMR's suspension

US Patent No

200 PSI cut-off pressure switch

Gibson 01-05 Chevrolet Silverado 2500 HD Base 6.0L 4in Cat-Back Single Exhaust - Aluminized Ignition>Starters Patented Internal Bypass technology allowsGibson Single Side Exhaust is perfect for improved acceleration, maximum hill climbing, towing and passing power. This is our best performing Exhaust System. Exits behind the rear tire. Quieter in the cab than any other Performance Exhaust. Dyno test results show it makes maximum torque and horsepower at low end (1800 to 3000 RPM). Horsepower gains average 10 15 and 15 20lb ft of increase torque. Hassle free, bolt on installation with professional