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Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port...

Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port...

Description: This is the second generation of the RennTech G-Wagon performance shock system. As any G-Wagon owner knows, the vehicle is an incredible off-road machine, but suffers from a less than comfortable ride and lack luster handling when spending its time on-road. Our brand new,...

Description: RennTech understands that brakes are one of the most important components of any performance car. Big brake upgrades are some of the most capable systems available at any price. Designed specifically to complement and control the mass of high-performance Mercedes and cars, RennTech's big...

Description: RennTech understands that brakes are one of the most important components of any performance car. Big brake upgrades are some of the most capable systems available at any price. Designed specifically to complement and control the mass of high-performance Mercedes and AMG cars, RennTech's...

Description: RennTech understands that brakes are one of the most important components of any performance car. Big brake upgrades are some of the most capable systems available at any price. Designed specifically to complement and control the mass of high-performance Mercedes and AMG cars, RennTech's...

Description: 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...

Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port...

Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port...

Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port...

Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port...

Description: The RennTech Hand-Held Suspension Module (HSM) is designed to work with the X166 GLS 63 AMG, equipped with the Mercedes Airmatic and Magic Body Control Suspensions.The unit allows the user to have full control over all four corners of the vehicle’s suspension and adjust in 1mm...

Description: The RennTech R3 Performance Package is the evolution stage of the R2 Pkg. Included in the R3 Package are all upgrades from the R2 Pkg, ECU Upgrade, Diverter Valve, Air Filters, Carbon Fiber Air Box Kit and Stainless Steel Sport Mufflers, as well as...

Description: The RennTech R1 Performance Package is the perfect entry level performance upgrade for the E 63 AMG. With the combination of the RennTech ECU Upgrade and the latest, 3rd generation Diverter Valve RennTech is able to add up to 91 HP and 175 LB-FT to the...

Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port...

Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port...

Description: The RennTech Hand-Held Suspension Module (HSM) is designed to work with the X166 GLS 550 Biturbo, equipped with the Mercedes Airmatic and Magic Body Control Suspensions.The unit allows the user to have full control over all four corners of the vehicle’s suspension and adjust...

Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2...

Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2...

Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2...

Description: The RennTech R2 Performance Package is the perfect entry level performance upgrade for the ML 63 AMG. 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...

Description: The RennTech R1 Performance Package is the perfect entry level performance upgrade for the ML 63 AMG. RennTech performance package includes our proprietary ECU tune in addition to our full carbon fiber airbox for a gain of +42 HP and +30 TQ over stock. A surplus...

Description: RennTech proprietary 82mm Performance Throttle body package offers a 22% increase of incoming air volume. This translates into a noticeable gain in both overall performance and throttle response with a performance increase of 11hp & 8 lb/ft. RennTech  throttle body assemblies were designed and...

Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2...

Description: 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...

Description: The RennTech V3 Digital Lowering Module (DLM) is designed to work with all available Mercedes Airmatic or ABC (Hydraulic) Suspensions.The unit allows the user to have full control over all four corners of the vehicle’s suspension and adjust in 1mm increments. The DLM requires...

Description: The RennTech R3 Performance Package is the evolution stage of the R2 Pkg. Included in the R3 Package are all upgrades from the R2 Pkg, ECU Upgrade, Diverter Valve, Air Filters, Carbon Fiber Air Box Kit and Stainless Steel Sport Mufflers, as well as...

Description: The RennTech R1 Performance Package is the perfect entry level performance upgrade for the ML 63 AMG. With the combination of the RennTech ECU Upgrade and the latest, 3rd generation Diverter Valve RennTech is able to add up to 122 HP and 178 LB-FT to the 5.5L V8 BiTurbo...

Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port...

Description: RennTech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal. RennTech proprietary tuning module stores both the RennTech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port...