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When combined with the intake and charge pipes
Multiple gauge screen layouts
and improved continuous power
HSP replaces it with a 3
*Uses HX40 Style Downpipe
11-19 Duramax LML L5P 5" Filter Back MBRP Stainless Engine When combined with the intakeXP Series Rugged and dependable our XP Series is made of T409 stainless steel. It's designed and built to stand up to the harshest road conditions. We are so sure that our 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. Budget friendly entry into stainless steel exhaust systems. T409 Stainless Steel Heavy duty construction Welded On Hangers Tip