R1 Performance Package for SL 600 MY 2007- (R230- 635 HP / 780 LB-FT) mclaren-slr-sls-class--197---2011-2014--amg-esr2440417 Engineered to utilize OEM lug

Engineered to utilize OEM lug bolts for most applications

RENNtech products are manufactured to perfectly match the stock AMG GT S exhaust system and include all necessary mounting hardware and clamps

The RENNtech tuning software for Mercedes offers significant gains in horsepower and torque across the vehicles entire power band

RENNtech Stage I Turbo Upgrade Package for M133 - 45 AMG Turbo Series

R1 Performance Package for SL 600 MY 2007- (R230- 635 HP / 780 LB-FT) mclaren-slr-sls-class--197---2011-2014--amg-esr2440417 Engineered to utilize OEM lugR1 Performance Package for 230 SL 600. Includes ECU Upgrade and High Efficiency Intercooler Pump. Up to 635HP and 780LB FT. Gains: +125HP & +168LB FT The R1 performance package for the Mercedes 600 V12 engines includes our proprietary ECU upgrade, in addition to our higher efficiency intercooler pump. This combination that provides huge increases horsepower, torque and throttle response across the vehicles entire powerband while still maintaining