BBK 10-15 Camaro LS3 L99 Shorty Tuned Length Exhaust Headers - 1-3/4 Silver CeramicThese BBK Performance shorty tuned Length exhaust Headers are designed and constructed as direct fit replacements for all GEN 5 Camaro 2010 15 LS3 and L99 applications. Each header is manufactured with 1 5 8 in. 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