Product Description

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

Our online store allows you to choose the best performance parts for your car. Instead of having the items delivered to your home, we can deliver direct to your local service center. You can browse products on this website. Please feel free to place an order and one of our representatives will contact you to arrange delivery and installation if requested of your new performance parts.