RENNtech Stainless Steel Headers for M113 Engines mercedes-benz-s-class--221---2007-2013--s-550-biturbo-esr7311087 similar to the pocketing process

similar to the pocketing process

our carbon airbox upgrade allows for greater horsepower and torque across the entire RPM range

The RENNtech Track Series is a fully forged wheel derived from RENNtech’s extensive motorsports background and engineering expertise

7L V8 BiTurbo) Modified Performance (at crank):

ECU Upgrade | 500HP / 625LB-FT | Gains: +52HP / +87LB-FT

RENNtech Stainless Steel Headers for M113 Engines mercedes-benz-s-class--221---2007-2013--s-550-biturbo-esr7311087 similar to the pocketing processRENNtech Stainless Steeel Exhaust Headers for M113 Engines. Gaines: +15HP & 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 across the