Product Description

The R2 performance package for the Mercedes 55 series engine takes performance to a whole new level.

Our R2 package includes our proprietary ECU upgrade in addition to our supercharger kit with intercooler upgrade; transforming your normally aspirated 55 series into a supercharged beast!

Performance is bumped to an incredible 460 HP and 465 TQ across a widened powerband; making the RENNtech R2 performance package the ultimate upgrade for your Mercedes Benz.

R2 Performance Package includes:

• RENNtech ECU Upgrade
• RENNtech Supercharger Kit
• RENNtech Intercooler Upgrade Kit

SLK 55 (R171) Stock Performance:

• 355 HP @ 5750 RPM; 376 LB-FT @ 3500 RPM

Modified Performance:

• 460 HP @ 5500 RPM; 465 LB-FT @ 2400-5000 RPM

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.