RENNtech SEC V12 Widebody
7.5 LITER 660 HP V12
The RENNtech SEC V12 Widebody blends iconic Mercedes-Benz design with groundbreaking performance, forged over 35 years of engineering excellence. At its heart is the legendary Mercedes-Benz M120 V12 engine—famously used in the limited series, and highly collectible CLK GTR, and the Pagani Zonda. At 7.5 liters, the RENNtech-built M120 represents one of the largest naturally aspirated V12 engines in production. Producing 660 horsepower and 650 lb-ft of torque, it delivers an emotional and unmistakable V12 exhaust note from equal length stainlsess steel headers. A bespoke manual transaxle ensures pure driving experience, while carbon-ceramic brakes provide exceptional stopping power. The reengineered widebody design is handmade by artisans and is complemented by forged 2-piece wheels creating a commanding presence. Each example is personalized for the client and meticulously handcrafted at RENNtech’s headquarters in Stuart, Florida. The RENNtech SEC V12 Widebody is offered as a Limited Series of 12 vehicles, built exclusively to order for collectors and enthusiasts who desire the perfect balance of heritage and performance.
One of Twelve
Secure your place among an exclusive group of just 12 worldwide by reserving your RENNtech SEC V12 Widebody today.
The first SEC V12 Widebody delivery is scheduled for December 2027, allocations are first-come-first served basis . For detailed information on pricing, available allocation number, build time, and customization options, please contact our Custom Build Team directly.
DESIGN
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The C126 Widebody is a reengineered evolution of the classic SEC, designed by RENNtech to enhance aerodynamics, cooling, and high-speed stability. Built during a full frame-up restoration, its widened stance and integrated ducting are functional by design—not cosmetic. Custom-forged wheels and flared arches complete a look that’s both purposeful and unmistakably original.
POWER
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The M120 V12 in the SEC Widebody is the only naturally aspirated version of its kind in active production today. Hand-built by RENNtech, the 7.5L engine delivers 660 hp and 650 lb-ft of torque, retaining the character of the original while surpassing it in output and refinement. It’s a rare mechanical achievement—modernized, reliable, and built entirely in-house to deliver uncompromised performance with timeless soul.
LIMITED SERIES
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Limited to just 12 vehicles worldwide, the SEC V12 Widebody is a modern coachbuilt performance car—engineered from the ground up by RENNtech. Every example features a unified chassis, drivetrain, and aerodynamic package, while the interior is tailored to each owner. Built with a singular focus on performance, precision, and individuality, it represents a rare fusion of engineering and craftsmanship.
M120 V12
Legendary Power
The Only 7.5 liter V12
The M120 V12 is one of the most legendary engines in Mercedes-Benz history—an all-aluminum, naturally aspirated masterpiece that powered icons from the Le Mans-winning CLK GTR to the Pagani Zonda. Originally developed for endurance and motorsport durability, the M120 became synonymous with high-revving smoothness, bulletproof reliability, and unmistakable character. Its racing pedigree and exotic applications cemented its status as one of the great V12s of the modern era. In the SEC Widebody, RENNtech brings the M120 back to life—reengineered to 7.5 liters and 660 horsepower—preserving its soul while elevating its performance to a new peak.
The Details
The Touchpoints with Attention to Detail
PAINT | DETAIL | INTERIOR
The interior of the SEC V12 Widebody is fully customizable and made to order, allowing each owner to create a unique environment tailored to their preferences. Featuring handcrafted performance seats upholstered in the highest-quality leather and premium materials, every detail is selected to enhance comfort, durability, and driving focus. From bespoke stitching to personalized finishes, the interior combines luxury with purpose—designed to deliver the best possible experience behind the wheel. Each SEC V12 Widebody is finished in a custom paint color, meticulously chosen and expertly applied to reflect the owner’s personal style and complement the car’s striking design.
The RENNtech Kapital Advantage
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✔ Flexible payment structures for long-term builds
✔ Options for both personal & corporate ownership
✔ Maintain liquidity while your build is in progress
✔ Lease-to-own scenarios with low residual values
Contact RENNtech to reserve your allocation and begin your custom build journey.