2003 Mercedes Benz G55 AMG Base Sport Utility 463.246 V8 5.5L
Upgrade your AMG M113K with the lightweight billet UPD 77mm pulley for massive 60-70+ RWHP gains and aggressive performance. 83mm and 88mm also available!
ECU Tune is required.
Eliminate weak factory plastic idlers with the UPD M113K Billet Idler Set - a high-strength CNC aluminum upgrade built for smoother operation, extreme durability, and long-term AMG reliability.
Lifetime Replacement
Pairs with all types of coolant to increase heat transfer and decrease engine temps.
Lifetime Replacement
Designed to handle continuous temperatures up to 1,800°F
Lifetime Replacement
100% Bolt-On, 20-50+ HP Gains, and includes with all hardware needed!
Lifetime Replacement
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Get access to even more vehicle data using PROLINK+ to wire in up to 2x analog signals and 1x CAN bus signal. Compatible with MPVI2+ and MPVI3 interfaces.
For use with HP Tuners MPVI2+ and MPVI3 interfaces only.
This product was last offered at the strikethrough price on
05-12-2026
Lifetime Replacement
High performance coolant conditioner
Sold in a black powdercoated finish.
Lifetime Replacement
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Eliminate weak factory plastic idlers with the UPD M113K Billet Idler Set - a high-strength CNC aluminum upgrade built for smoother operation, extreme durability, and long-term AMG reliability.
Lifetime Replacement
Service kit for FMDv004
Lifetime Replacement
Unleash the hidden power in your vehicle to get instant feedback & response!
Designed to handle continuous temperatures up to 1,200°F
Lifetime Replacement
Includes all new hardware, pulley is Anodized in Black
Only fits Weistec Supercharger
Lifetime Replacement
Includes all new hardware, pulley is Anodized in Black. This pulley is designed for cars without headers, and stock (150mm) crank pulley.
Only fits Weistec Supercharger
This product was last offered at the strikethrough price on
05-02-2026
Lifetime Replacement
