700hp. Let that sink in for a second. For comparison, the average, run-of-the-mill CLS 500 makes 400hp. Even when AMG gets their hands on it, they only see fit to tune it to a “measly” 520hp. RENNtech takes the already blisteringly fast AMG model, decides that it’s not fast enough, throws in bigger turbos and […] More »

Some people just have no respect for the Mercedes engineers who spend hundreds, if not thousands, of hours testing and tuning the carmaker’s products for the best performance. And that’s actually a good thing, because if there were no tuners like RENNtech who seek to obtain the ultimate performance from cars they lay their hands

RENNtech continues to put their in-house project car, the C74, to the test by evolving the wide body C63 into a full out road racer. The C74 Konzept, which started life as a 2008 Mercedes C63, hosts the entire catalog of RENNtech performance upgrades and exterior enhancements.

Germany’s not the only country with its pool of talented Mercedes-Benz tuners. One of the best MB tuners in America, Renntech, now offers their latest take on the C63 AMG.
They call it the Renntech C74. The modification package includes upgrading the stock 6.2-liter V8 to churn out 605hp and 555lb-ft. This means the quarter mile