RENNtech Stainless Steel Headers for M273 Engines (230-SL 550) mercedes-benz-s-class--222---2014-2017--s500-maybach-esr3807363 544 LB-FT Mercedes M157 engine

544 LB-FT Mercedes M157 engine performance when measured

Up to 394 hp and 387 lb-ft

211 - E Class and 230 - SL Class

RENNtech ECU Upgrade for 292 - GLE 400 BiTurbo 4-MATIC Coupe

RENNtech Stainless Steel Sport Muffler for 231 - SL 63/65 AMG

RENNtech Stainless Steel Headers for M273 Engines (230-SL 550) mercedes-benz-s-class--222---2014-2017--s500-maybach-esr3807363 544 LB-FT Mercedes M157 engineRENNtech Stainless Steel Exhaust Headers for M273 Engines (216 CL 221 S). Gains: +11HP & 20TQ RENNTECH stainless steel and ceramic coated exhaust headers offer true bolt on installation, mounting directly to the OE down pipes and all RENNTECH headers are hand built from mandrel bent, seamless tubing and CNC machined stainless flanges. Advanced computer aided design (CAD) and flow analysis software allows RENNTECH headers to deliver substantial gains