- T409 Stainless
Rugged and dependable the XP Series is made of T409 stainless steel. It is designed and built to stand up to the harshest road conditions. T409 will develop some surface rust in time, but never rust through. We are so sure that the MBRP Exhaust XP series has what it takes that we have given it an amazing LIFETIME WARRANTY. That is absolutely the best warranty for a T409 system in the industry.