Renntech's SEC V12 Widebody: A Modern Classic Reimagined








Renntech is poised to redefine automotive excellence by meticulously re-engineering the Mercedes-Benz SEC, merging vintage allure with contemporary power. This ambitious project involves the creation of a limited series of 12 bespoke vehicles, each meticulously crafted to order. At the heart of these rejuvenated coupes lies a formidable 7.5-liter V12 engine, a powerhouse capable of unleashing 660 horsepower and 650 pound-feet of torque. This engine, renowned for its presence in automotive legends like the Pagani Zonda and Mercedes CLK GTR, is paired with a custom manual transaxle, promising an unadulterated driving experience. Beyond its mechanical prowess, each SEC will undergo a comprehensive frame-up restoration, coupled with the integration of a widebody kit designed to optimize aerodynamics, enhance cooling efficiency, and ensure exceptional stability at high speeds, making these machines a true blend of heritage and performance.
The genesis of this remarkable transformation lies in the Mercedes-Benz SEC, a coupe produced between 1979 and 1991. During its original production run, the S-Class, from which the SEC was derived, was offered with a variety of engines, including inline-five, inline-six, and V8 configurations. Notably, a V12 option was never part of the SEC's initial offerings; such a high-cylinder count engine only emerged with the third-generation W140 S-Class. Renntech's decision to integrate this powerful V12 into the SEC is a bold move, elevating the classic's performance to unprecedented levels. This endeavor not only celebrates the SEC's elegant design but also imbues it with a level of power and sophistication that was previously unimaginable for the model.
The engineering marvels don't stop at the engine. Each of the 12 reengineered SECs will feature an all-aluminum engine block, complemented by equal-length headers to optimize exhaust flow and maximize performance. To manage the immense power, the vehicles will be equipped with high-performance carbon-ceramic brakes, seamlessly housed behind elegantly designed forged two-piece wheels. These components are critical for both the safety and dynamic capabilities of such a high-performance vehicle. The meticulous attention to detail, from the engine build to the chassis enhancements, ensures that each Renntech SEC V12 Widebody is not just a car, but a rolling piece of art, embodying the pinnacle of automotive craftsmanship and engineering prowess.
The anticipation surrounding these custom-built machines is considerable, with Renntech projecting the delivery of the inaugural SEC V12 Widebody in December 2027. This timeline underscores the intricate and demanding nature of such a specialized project, where precision, performance, and aesthetic perfection are paramount. The project represents a passionate homage to the Mercedes-Benz SEC, transforming a cherished classic into a modern marvel capable of holding its own against contemporary supercars. It’s a testament to the enduring appeal of the SEC and Renntech's commitment to pushing the boundaries of automotive performance and design.
Renntech's vision for the classic Mercedes-Benz SEC is a breathtaking fusion of nostalgic design and cutting-edge engineering. The inclusion of a robust V12 engine and a meticulously crafted widebody kit not only revitalizes the aesthetic appeal of the SEC but also dramatically enhances its performance capabilities, cementing its status as an extraordinary restomod. This initiative underlines the timeless affection for the SEC, a model that, despite its age, continues to inspire innovation and admiration within the automotive community.