RENNtech R1 Performance Package for Mercedes-Benz CLK 550

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R1 Performance Package for 209 - CLK 550. Includes ECU Upgrade and Stainless Steel Header. Up to 413HP and 422 TQ.

The R1 performance package for the Mercedes 550 includes our proprietary ECU upgrade in addition to our stainless steel shorty headers designed specifically for the 550 V8 for a combination that provides increased performance, sound and throttle response across the vehicles entire powerband.

R1 performance package includes:

  • RENNtech ECU Upgrade
  • Stainless Steel Shorty Headers

CLK 550 (C209) Stock Performance:

  • 382 HP / 391 LB-FT

Modified Performance:

  • 413 HP / 422 LB-FT