Mercedes M113K Performance Upgrades – E55, CLS55, SL55, S55, G55 AMG
Unlock the full potential of your supercharged 5.4L M113K V8 with proven, purpose-built upgrades. Whether you're chasing dyno numbers or simply want a faster, more reliable street car, this collection is curated to help you get there.
Performance Upgrades That Deliver
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ECU Tuning: Custom flash calibration, optimised for pulley upgrades, headers, and high-octane fuel
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Fuel & Air: 550cc and 630cc injectors, 3” intakes, 82mm throttle body, E85 conversion
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Cooling: Bosch 010 intercooler pump, 3.5L trunk tank, oil catch can kits
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Exhaust: Mid-length and log-style headers for reduced backpressure and increased flow
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Drivetrain: Wavetrac LSD, Street Valve Body v2, 722.6 blue top solenoids
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Pulleys & Support: Smooth idlers, mini pulleys, and hardware for high-boost reliability
Power figures depend entirely on your pulley, fuel, supporting hardware and the calibration itself, so we quote them per build rather than as a collection-wide number. Tell us what is already on the car and we will tell you what to expect from it.
Engineered for Boosted Reliability
Every item here has been tested, vetted, and run by M113K enthusiasts. We don't list fluff — just hard-hitting upgrades that make your AMG stronger, faster, and more capable across the board.
Whether you're doing your first tune or going all-in with injectors, headers, and cooling, this is your one-stop shop for serious M113K performance.
Exhaust and emissions equipment.
Header and exhaust listings in this collection state individually whether the factory catalytic converters are retained. Any part that removes them is sold for closed-course competition and off-road use only and is not legal on a vehicle registered or operated on public roads in the US. Read the listing before ordering.
