ACR-X

The Dodge Viper ACR-X features naturally-aspirated 8.4-liter V10 producing 640 horsepower and 605 lb-ft torque through six-speed manual transmission and rear-wheel-drive at 3,300 pounds curb weight reduced 160 pounds from standard Viper through stripped interior and lightweight materials. Non-street-legal track specification includes factory-installed roll cage, fire suppression system, racing fuel cell, competition seat with six-point harness, factory headers and low-restriction exhaust system, forged pistons, transmission cooler, rear differential cooling system, larger front brake rotors with increased surface area, improved brake cooling scoops in front fascia, track-tuned suspension with adjustable two-way dampers, unique springs, and adjustable sway bar links.

ACR-X represents ultimate factory Viper track car produced in limited 50-unit run (initially 25 units, expanded to 50 due to demand) during 2010 model year, creating turnkey racing platform for enthusiast track days and club racing without homologation requirements or professional series eligibility. The purposeful non-street-legal classification eliminates emissions compliance and noise regulations allowing maximum performance extraction from pushrod V10 architecture, establishing American muscle philosophy applied to dedicated circuit car competing against Porsche GT3 Cup and Ferrari Challenge specifications through raw power and mechanical simplicity rather than sophisticated aerodynamics or electronic systems, with factory safety equipment and proven durability supporting aggressive track use, creating exclusive ownership proposition for Viper enthusiasts seeking ultimate expression of Dodge performance heritage before brand discontinuation.