Stainless Catback Exhaust For 05 to 06 Pontiac GTO 6.0L By OBX-RS

Improves performance, efficiency, and horsepower ~12-16 Horsepower Gain Mandrel bent for smoother exhaust flow Dual T.I.G. welded construction for stronger hold  No instalLatitudeion instruction included in this kit, we recommend professional instalLatitudeion Manufacturer's Limited Lifetime warranty against manufacturer defects (Must fill out and return warranty card with a copy of the receipt and within 30 days of purchase date) Piping: 2.5" OD, Inlet: 2.4" ID, Tip Diameter: 4.0" OD, Tip Length: 11.5" Inch, O2 Bung: N/A