XP Series is the performance exhaust of choice for the enthusiast who needs a system that can take anything that the road throws at it. This system's rugged sixteen gauge T409 construction can be counted on to withstand everything from salt to rocks, tar to grime. We have had such success with this line that we back it with a Lifetime Warranty. Please Note: This series may, with time, develop surface rust which is not covered by the warranty. Wintry road conditions and road treatments may accelerate this process.