R1 Performance Package for SL500 | M113 | R129 | +23HP / +26LB-FT | MY 1999-2002 mercedes-benz-g-class--463---1990-2018--g-550-biturbo-esr6944132 the HSM will be 'married'

the HSM will be 'married' to the vehicle and can only be used with this vehicle

Upon close inspection you will notice highly refined structural design elements which have been strategically positioned to give the wheel rigidity while keeping weight to a minimum

designed to handle the larger wheel and additional power

550 HP @ 6000 RPM

R1 Performance Package for SL500 | M113 | R129 | +23HP / +26LB-FT | MY 1999-2002 mercedes-benz-g-class--463---1990-2018--g-550-biturbo-esr6944132 the HSM will be 'married'R1 Performance Package for M113 Powered R129 SL500 (MY 1999 2002). Includes ECU Upgrade and Carbon Fiber Air Box. Up to +23HP and +26LB FT The R1 performance package for the Mercedes 500 series engine includes our proprietary ECU upgrade in addition to our full carbon fiber airbox upgrade which offers a larger volume of incoming air for better engine breathing and improved cylinder filling. This combination that provides noticeable increases