BBK Tuned Length Shorty Headers - 1.75 in Primary - Stock Collector Flange - Titanium Ceramic - GM LS-Series - GM Truck 1999-2009 - Pair 42020R 006") bronze gear is installed

006") bronze gear is installed along with an adjustable slip collar for modified blocks

12 x 18 x 1/16 in Thick

Easy Adjustments While Running

Fiber Optic Cable

BBK Tuned Length Shorty Headers - 1.75 in Primary - Stock Collector Flange - Titanium Ceramic - GM LS-Series - GM Truck 1999-2009 - Pair 42020R 006") bronze gear is installedThese BBK Performance shorty tuned Length exhaust Headers are designed and constructed as direct fit replacements for all 99 09 GM Truck and SUV 6. 0L applications. Each header is manufactured with 1 5 8 CNC mandrel bent tubing that offers unrestricted exhaust flow for increased horsepower and torque over factory OEM manifolds. BBK tuned Length headers offer improved scavenging waves for better combustion, which leads to improved performance and fuel