Dodge Viper ACR-02

This mad-looking machine is the 2016 Dodge Viper ACR, the fastest street-legal Viper track car ever. This is the latest in the line of hardcore ACR Vipers, from the original 1999 model to the second ACR (2008-2010) based on the fourth-gen coupe. There was also a non-street legal Viper ACR-X that was targeted at the grassroots racer.

For the 2016 Viper ACR, the SRT engineering team focused its efforts on three areas: aerodynamics, chassis and tyres to maximise grip, producing “never-seen-before handling capabilities and unprecedented lap times,” according to Dodge. “Our goal is to arm our enthusiasts with the ultimate Viper track car to dominate road courses around the world,” proclaimed Tim Kuniskis, president and CEO of Dodge and SRT brands.

An Extreme Aero package produces the highest aerodynamic downforce of any production car. During on-track testing, development engineers have experienced nearly one-tonne of downforce at the Viper ACR’s top speed of 285 km/h.

Dodge Viper ACR-03

It includes a huge 1,876 mm wide adjustable dual-element rear wing, rear carbon fibre diffuser (includes six removable strake extensions, designed to rub against the track surface for increased straight-line stability and downforce), unique SRT hood with removable louvers (to reduce air pressure in front wheel wells to for more downforce), detachable extension for the front splitter and four dive planes.

A fast car needs brakes to match, and the Viper ACR features new Brembo Carbon Ceramic Matrix brakes for optimum performance with “unprecedented brake fade resistance”, plus better handling through reduced unsprung weight. It consists of 390 mm two-piece front rotors and 360 mm two-piece rear rotors, with six-piston calipers up front and four-piston units at the back.

At each corner sit aluminium bodied, double-adjustable coilover Bilstein race shocks designed specifically for the Viper ACR. They work in conjunction with ride height adjustment for optimal control of weight transfer and handling performance. Each shock provides independent 10-way rebound and compression adjustability, and the system allows for more than three inches of ride height adjustment.

Dodge Viper ACR-04

Dodge says that the 295/25 R19 front tyres and 355/30 R19 rears provide the largest combined tyre patch available on any production car. They are Kumho Ecsta V720s designed specifically for the Viper ACR.

At the heart of the ACR is the handcrafted, all-aluminium 8.4 litre V10 overhead-valve engine, rated at 645 hp and 814 Nm of torque. Power reaches the pavement through the standard Tremec TR6060 six-speed manual ‘box. Unique exhaust tips have been added to the side-mounted pipes for reduced exhaust pressure.

Inside, the instrument cluster area and door armrest panels are wrapped in Alcantara. A new, ACR-exclusive Alcantara wrapped steering wheel with racing stripe and unique badging further sets the ACR apart. The term “high-grip” is also used for the seats (again, with Alcantara inserts), while a unique dash plaque is finished in carbon fibre. Customers can choose between silver or red accent stitching.

Hand-built in Detroit at FCA’s Conner Avenue Assembly Plant, the Viper ACR goes on sale in Q3 2015.