With its SEC V12 Widebody Sledgehammer, a contemporary take on the venerable C126 platform, RENNtech is poised to revolutionise vintage Mercedes restomods.
Only twelve examples will be hand-built, each combining the unmistakable presence of the original SEC with a monstrous 7.5-litre naturally aspirated V12 producing 660 horsepower and 650 lb-ft of torque.
Deliveries are scheduled to begin in 2027, and pricing remains undisclosed, though this will undoubtedly be a collector’s-level investment.
The C126 platform, built between 1981 and 1991, has long been cherished for its blend of elegance and performance.

RENNtech, founded in 1989 and renowned for AMG tuning expertise, has restored each chassis from the ground up, widening the stance and incorporating functional aerodynamic ducting.
The result is a car that doesn’t just look aggressive—it behaves aggressively, too. Custom-forged wheels fill flared arches, complementing the muscular presence while supporting high-speed stability.
Under the bonnet, the M120 V12—already famed for powering the Le Mans-winning CLK GTR and the Pagani Zonda—is expanded to 7.5 litres.
There are no turbos or hybrid systems; this is a raw, unfiltered engine, designed for drivers who crave mechanical honesty.
Inside, RENNtech promises bespoke interiors tailored to each buyer, ensuring that no two Sledgehammers are alike.

For UK collectors and enthusiasts, this is a rare opportunity to secure a dramatic, high-performance take on a Mercedes classic.
With only a dozen examples planned worldwide, the SEC V12 Widebody Sledgehammer is less a car and more a statement: a blend of heritage, engineering, and audacious power that will be impossible to ignore on the road.











