SEC V12 Widebody SLEDGEHAMMER
One of Twelve—Limited Production I Arriving in 2027
RENNtech is proud to announce the ultimate evolution of the C126 platform - the RENNtech SEC Sledgehammer.
Our Reimagined SEC Widebody merges modern performance solutions, with the timeless looks and feel of a classic Benz. Brought to you by precision engineering, and more than 35 years of Performance Without Compromise.
Powered by the legendary M120 V12 and limited to just 12 commissions worldwide, the SEC Sledgehammer is tailored to each individual owners discerning taste.
M120 V12
The First 7.5 liter SEC in the World
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 Championship winning CLK GTR to the Pagani Zonda. Originally developed as an answer to Bavaria, the M120 became synonymous with success, power, and bulletproof reliability. 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 650 horsepower—preserving its soul while elevating its performance to a new peak.
Engine & Power
RENNtech 7.5 Liter M120 V12 | 650 HP and 650 LB-FT TQ
Increased Displacement
Forged Crankshaft
Titanium Connecting Rods
Lightweight Forged Pistons
Upgraded Camshafts and Valvetrain
Advanced CNC Ported Heads
Advanced CNC Ported Combustion Chamber
Advanced CNC Ported Intake Manifold
Exhaust
Stainless Steel Equal Length Headers
Performance Cats
Performance Exhaust
Transmission
Rear Mounted H-Pattern Manual Transaxle
