{"product_id":"exhaust-headers-for-mercedes-benz-sl55-amg-2003-2008-5-4l-supercharged-v8","title":"Exhaust Headers for Mercedes Benz SL55 AMG (2003-2008) 5.4L Supercharged V8","description":"\u003ch2\u003eHigh-Flow Mid-Length Exhaust Headers for 2003-2008 Mercedes Benz SL-Class (M113K \/ R230)\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eDesigned for competition use, these mid-length exhaust headers eliminate severe factory exhaust restrictions to drastically reduce back pressure and unlock top-end power.\u003c\/strong\u003e\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock SL-Class Exhaust Bottleneck\u003c\/h3\u003e\n  \u003cp\u003eThe factory M113K and M113 exhaust manifolds are notoriously restrictive, utilizing a cast log-style design that forces exhaust pulses to collide. This inefficient scavenging creates excessive back pressure and elevated combustion chamber temperatures, fundamentally choking the 5.4L V8. On supercharged applications under heavy load, this bottleneck prevents efficient gas evacuation, causing extreme heat soak, high-RPM power fade, and a muffled exhaust note that fails to reflect true AMG performance.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eThese mid-length headers maximize exhaust evacuation using wider primary tubes that promote a smooth, high-velocity transition of exhaust pulses into the collector. By significantly reducing back pressure, supercharged M113K engines can realize up to 15 percent gains in horsepower and torque, while naturally aspirated V8s typically see 7 to 10 percent gains. The kit includes downpipes and must be professionally welded to your existing exhaust system. Note that chassis fitment is universal and extremely tight: expect tight routing around the R230 transmission tunnel, steering shaft interference on W211 chassis, subframe clearance issues on W220\/C215 models, and restricted clearances in W203 engine bays. Strictly for off-road and competition use.\u003c\/p\u003e\n  \n  \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2003-2008 Mercedes Benz SL-Class\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eM113K (5.4L SC V8) \/ R230\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e493 hp \/ 516 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n \n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eMercedes-Benz SL55 AMG\u003c\/li\u003e\n    \u003cli\u003eMercedes-Benz CLS55 AMG\u003c\/li\u003e\n    \u003cli\u003eMercedes-Benz E55 AMG\u003c\/li\u003e\n    \u003cli\u003eMercedes-Benz C55 AMG\u003c\/li\u003e\n    \u003cli\u003eMercedes-Benz SL500 AMG\u003c\/li\u003e\n    \u003cli\u003eMercedes-Benz CLS500 AMG\u003c\/li\u003e\n    \u003cli\u003eMercedes-Benz E500 AMG\u003c\/li\u003e\n    \u003cli\u003eFits Left-Hand Drive (LHD) and Right-Hand Drive (RHD) vehicles\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Mercedes Benz Precision Standard\u003c\/h3\u003e\n  \u003cp\u003eFor high-performance European platforms, reducing thermal load and eliminating exhaust flow restriction is paramount. These headers deliver the aggressive AMG bark and unrestricted power delivery required for competitive track use, ensuring your supercharged V8 performs at its absolute peak without compromise.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48299714609400,"sku":"DS-EPTWC5TM1","price":589.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/exhaust-headers-for-mercedes-benz-sl55-amg-2003-2008-5-4l-supercharged-v8-1.jpg?v=1777522072","url":"https:\/\/performancechiptuning.com\/fr\/products\/exhaust-headers-for-mercedes-benz-sl55-amg-2003-2008-5-4l-supercharged-v8","provider":"Performance Chip Tuning","version":"1.0","type":"link"}