These New BBK High Flow X pipes are designed to eliminate your factory resonators to increase performance and horsepower and as an after-cat product they are smog legal, just like a cat-back exhaust system. On the SS models the BBK engineers designed the X pipe with 2-3/4" CNC mandrel bent tubing for great power and sound. On the V6 models the x pipe is designed with 2-1/2" tubing to ensure maximum low end torque while still offering great sound and performance.
