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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
Keep your underhood temps low and your turbo speeds high!
Features Bluetooth control from you phone! Download the app from the app store and see real time Ethanol mixtures in your tank!
Lifetime Replacement
Don't let faulty injectors hinder performance
2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
This product was last offered at the strikethrough price on
05-07-2026
Lifetime Replacement
Includes Everything needed to replace the Restrictive Stock Airbox.
CARB certified for sale in all 50 states
Lifetime Replacement
Upgrade your M157 AMG with the UPD Billet Idler Kit - CNC-machined aluminum pulleys built to eliminate factory plastic idler failures and deliver lasting performance and reliability.
This product was last offered at the strikethrough price on
05-10-2026
Lifetime Replacement
A more audible valve that will not leak under elevated boost pressures, while still providing with rapid response and OEM-like functionality
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
07-21-2026
Lifetime Replacement
Pairs with all types of coolant to increase heat transfer and decrease engine temps.
Lifetime Replacement
Keep your Eventuri intake performing at its peak with the Type D2 replacement filter!
Get up to +65 hp and +72 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip
Lifetime Replacement
Get up to +85 hp and +95 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip
Lifetime Replacement
Get up to +56 hp and +64 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip
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
Fits all M176, M177 & M178 Engines
Lifetime Replacement
