R2 Performance Package for S 63 (W221- 567 HP / 503 LB-FT) mercedes-benz-slr-mclaren-slr-mclaren--2005-2011--esr4924260 +49 HP / +102 LB-FT

+49 HP / +102 LB-FT

All RTS wheels feature traction-improving bead seat knurling

Our performance package includes our proprietary ECU tune in addition to our full carbon fiber airbox for a gain of +54 HP and +30 TQ over stock

RENNtech ECU Upgrade for 164 - ML 350

HT40 wireless LAN

R2 Performance Package for S 63 (W221- 567 HP / 503 LB-FT) mercedes-benz-slr-mclaren-slr-mclaren--2005-2011--esr4924260 +49 HP / +102 LB-FTR2 Performance Package for 221 S 63 AMG. Includes ECU Upgrade, Carbon Fiber Air Box, Upgraded Throttle Body and Stainless Steel Headers. Up to 566HP and 518LB FT. Gains: +59HP & +43LB FT RENNtech performance package 2 includes our proprietary ECU tune in addition to our full carbon fiber airbox, 82mm throttle body kit and RENNtech stainless steel headers for a gain of +53 HP and +68 LB FT over stock. Performance Package 2 Includes: RENNtech ECU