These BBK Performance shorty unequal Length exhaust Headers are designed and constructed with 1-5/8" CNC mandrel bent tubing that offers unrestricted exhaust flow for increased horsepower and torque over factory OEM manifolds. As with all BBK Performance exhaust headers they feature a 3/8" laser cut header flange for additional strength and a guaranteed leak free fit. All headers are robotically and precision hand welded and then pressure tested to ensure years of reliability and performance in the real world. All BBK exhaust headers are available in titanium ceramic or polished silver ceramic coated finish and include new exhaust header gaskets, header bolts and hardware to complete the installation. 50 State Legal - CARB Approved.