RENNtech Stainless Steel Headers for M273 Engines (230-SL 550) carbon-fiber RENNtech Coilover Suspension for 207

RENNtech Coilover Suspension for 207 - E Class Coupé Pre-FaceLift

Dyno measured by RENNtech (peak):               189 HP @ 3

S63 (W221) Stock Performance:

Rated by RENNtech:              714 HP @ 6

RENNtech Stainless Steel Headers for M273 Engines (230-SL 550) carbon-fiber RENNtech Coilover Suspension for 207RENNtech 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