The ACR version of the Viper is, to cut right to the chase, a brutally efficient racing machine that is only a hair’s breadth away from being illegal to drive on the street (in fact, to do so, you’ll have to unbolt the front chin spoiler first). The vent-studded hood and massive rear wing are probably going to be the first clues that this is no ordinary Viper. In fact, the ACR has been optimized for two things—lower weight and higher downforce. What’s not part of the package is additional horsepower, because as anyone that’s spent time in a Viper SRT10 should know, it’s not necessary at all. If you need more power than what the ACR provides, you’re probably not driving it correctly. However, anyone would appreciate the uprated brakes, harder track-focused suspension, and race-ready alloy rims. It takes a brave driver to use the ACR hard without first getting to know its limits, and a braver one to attempt to unleash it on a public road, but for those adrenaline junkies who want a Viper that is as close to a Viper Competition Coupe as you could slap a license plate onto (if you really wanted to), then the ACR is your ticket.
The Viper SRT10 ACR features street-legal racing tires (Michelin Pilot Sport Cups), two-piece brake rotors, adjustable suspension, and significant aerodynamic improvements. The 8.4L V10 engine remains the same as in the standard Dodge Viper SRT10, though, as the power and torque are still 600 hp (447 kW) and 560 ft·lb (760 N·m), respectively.
The SRT10 ACR's weight was also decreased using the "Hardcore Package", which removed the AC, radio, speakers, amplifier, trunk carpet, hood pad, and tire inflator, all for removing 40 lb (18 kg). The SRT10 ACR is capable of a downforce of up to 1000 lb (454 kg) at 150 mph (241 km/h), roughly 10 times more downforce than the standard Viper SRT10 at the same speed.
It is capable of 0 - 60 mph (97 km/h) in 3.4 seconds, 0 - 100 mph (161 km/h) in 8 seconds, and a top speed of 166 mph (267 km/h), which is higher in Forza Motorsport 4 and Forza Horizon 3.
In Forza Horizon 3, the Viper SRT10 ACR is available as a Horizon Edition model variant. This version of the Viper SRT10 ACR carries a unique yellow paintjob with twin black stripes, aftermarket rims, a race-tuned front splitter, and the Lamborghini Aventador LP 700-4's 6.5 L V12 engine, but with various engine upgrades, most notably a twin turbo aspiration swap. Previously obtainable in the Horizon Wheelspin before October 14, 2016, it was available in the July 2017 Forzathon eventUntamed Performance.
In Forza Motorsport 7, the Viper SRT10 ACR is available as a Forza Edition model variant, with some differences from the Horizon Edition version: the 6.5L V12 is now absent as it has been replaced by the normal Viper V10, the yellow paintjob is now based more closely on the manufacturer colors for the Viper SRT10, and homologated performance is used. The Viper SRT10 ACR Forza Edition is unlocked by completing the Masters Championship in the Forza Driver's Cup.
10-3Season Pass car packs, A10th Year Anniversary car pack, BPre-order bonus, FFast & Furious car pack, HHot Wheels car pack, NNASCAR expansion, PPorsche expansion, SETurn 10 Select car pack, SUTurn 10 Summer car pack, VVIP