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RENNtech Unveils the SEC V12 Widebody Sledgehammer Restomod

2/12/2026, 5:53:44 AM

Overview of the RENNtech SEC V12 Widebody Sledgehammer

RENNtech, a Florida-based automotive tuner founded by former AMG engineer Hartmut Feyhl in 1989, has introduced the SEC V12 Widebody Sledgehammer, a high-performance restomod based on the iconic Mercedes-Benz C126 platform. Only 12 units will be produced, each featuring a custom interior tailored to the buyer's specifications. The SEC was originally manufactured from 1981 to 1991, and RENNtech aims to blend modern performance with classic design.

Engine and Performance Specifications

At the heart of the Sledgehammer is a reengineered 7.5-liter V12 engine, derived from the Mercedes M120, which has powered notable vehicles like the CLK GTR and Pagani Zonda. This naturally aspirated engine produces 660 horsepower and 650 pound-feet of torque, significantly surpassing the original SEC's most powerful variant, which had a 5.6-liter V8 generating 295 horsepower. The Sledgehammer's engine is paired with a bespoke manual transaxle, and the vehicle is equipped with carbon-ceramic brakes and custom-forged wheels.

Design and Aerodynamics

The Sledgehammer features a widebody kit designed not only for aesthetic appeal but also to enhance aerodynamics, cooling, and high-speed stability. The modifications include a widened stance, integrated ducting, flared fenders, and a subtle trunk lip spoiler. These design elements are intended to improve the driving experience while maintaining a classic look that pays homage to the original SEC.

Production Timeline and Availability

Deliveries of the SEC V12 Widebody Sledgehammer are expected to commence in December 2027. While pricing details have not yet been disclosed, potential buyers are advised to prepare for a significant financial commitment given the exclusivity and bespoke nature of the vehicle.

Criticism and Market Context

While the Sledgehammer has garnered attention for its performance and design, some automotive enthusiasts may question the necessity of such high-powered restomods, particularly in a market increasingly focused on sustainability and electric vehicles. Critics argue that the emphasis on raw power may not align with current automotive trends, which favor efficiency and eco-friendliness.

Official Statements

RENNtech has emphasized that the Sledgehammer is a tribute to the original AMG Hammer from the 1980s, which was known for its performance and luxury. The company stated, "Our goal is to bring the AMG's famous attention-to-detail to power-hungry Mercedes-Benz owners in the United States."

Verbatim Quotes

  • “A Modern Slegehammer Renntech SEC V12 Widebody Sledgehammer Renntech The soul of this build is the massive engine upgrade.” — RENNtech
  • “its widened stance and integrated ducting are functional by design – not cosmetic.” — RENNtech
  • “So far, Renntech only has renderings of the new Sledgehammer project, but the car is oozing 1980s excess in all the right ways.” — CarBuzz

The RENNtech SEC V12 Widebody Sledgehammer represents a blend of classic automotive heritage and modern engineering, appealing to collectors and enthusiasts alike. As the automotive landscape evolves, this restomod stands as a testament to the enduring allure of high-performance vehicles.