Who Wouldn’t Want This Stunning Restomod Mercedes with a Supercar Engine
Restomods have a special magic when they blend timeless elegance with modern performance, and few do it better than the latest creation from Renntech. This American tuning specialist, with over three decades of expertise in pushing Mercedes models to new heights, has just revealed a masterpiece that pays homage to the brand’s iconic past while delivering hypercar-level thrills. Built around the classic Mercedes-Benz SEC coupe from the C126 series, a symbol of luxury and sophistication in its day, this project flips the script by transforming a refined grand tourer into an absolute beast. The result is the Renntech SEC V12 Sledgehammer, a name that nods to the legendary high-performance Mercedes modifications of the late 1980s.
At the heart of this build lies a thoroughly upgraded naturally aspirated V12 engine, the famous M120 that once powered legends like the Pagani Zonda and the Mercedes-AMG CLK GTR. Renntech has taken this powerplant to another level by increasing its displacement to a massive 7.5 liters. The result is an impressive 660 horsepower paired with 881 pound-feet of torque, numbers that catapult this elegant coupe into elite territory. Power flows exclusively to the rear wheels, staying true to the spirit of classic powerful Mercedes coupes, and a custom exhaust system ensures the V12 delivers a symphony reminiscent of exotic Italian supercars.
The exterior transformations are just as dramatic as the mechanical upgrades. Renntech crafted a bespoke body with dramatically widened fenders to accommodate larger forged wheels and enhanced braking systems. A new hood, redesigned bumpers, a rear diffuser, and a subtle spoiler all contribute to both style and function. These changes improve aerodynamics over the original design, making the car not only look aggressive but also perform better at high speeds.

Inside, details remain under wraps for now, but Renntech promises fully bespoke interiors tailored to each owner’s preferences. Expect a wide array of premium materials, colors, and custom touches that will make every single example feel one-of-a-kind. This level of personalization fits perfectly with the restomod philosophy, where heritage meets individual expression.
What makes the Sledgehammer truly exclusive is its limited production run of just 12 units worldwide. The first customer deliveries are slated for 2027, giving collectors plenty of time to dream about owning one. While pricing hasn’t been announced, it’s safe to say this will be a six-figure investment aimed at serious enthusiasts who appreciate rare automotive art.
Projects like this remind us why the Mercedes SEC holds such a cherished place in automotive history. It was never about raw speed originally, but about effortless cruising with unmatched presence on the road. Renntech respects that legacy while injecting modern engineering that rivals today’s top performance machines. The combination of a naturally aspirated V12 roar, rear-wheel-drive dynamics, and that widened, muscular stance creates something that feels both nostalgic and cutting-edge.

For anyone passionate about classic Mercedes models, this restomod represents the pinnacle of what skilled tuners can achieve. It bridges generations, taking a 1980s icon and equipping it with power that echoes the wildest supercars of the 1990s and beyond. The attention to detail in both form and function shows a deep understanding of what makes these cars enduring favorites.
In a world full of electric hypercars and turbocharged everything, there’s something refreshingly pure about a big naturally aspirated V12 in a beautifully restyled classic body. Renntech has managed to capture that essence while adding practical improvements like better brakes and handling. It’s the kind of build that turns heads at concours events and dominates on open roads alike.
The limited nature of the production adds to the allure, ensuring each owner joins a very small club of privileged drivers. With only a dozen being made, spotting one in the wild will be a rare treat for years to come.
What do you think of this V12-powered restomod masterpiece – would you add one to your dream garage if money were no object? Share your thoughts in the comments.
