I saw this on ACRs

**Viperenvy** · 11-29-2017

From ALLPAR:

"The 1999 Dodge Viper ACR (American Club Racer) was a hybrid of the GTS-R and the standard Viper. The major changes to make these vehicles race-ready were more power, lower weight, and refined handling:
◦Smooth intake hoses and a K&N air filter element increased air flow to add 10 horsepower.
◦60 pounds were cut by removing the audio system, air conditioning, and fog lights (brake cooling ducts can be put into the openings).
◦Suspension components have been replaced by GTS-R racing units with Meritor (formerly Rockwell) springs. Michelin Pilot Sport (WERE THESE ON ALL VIPERS?) high-performance radials (P275/35ZR18 front, P335/30ZR18 rear) mount on one-piece 18-inch BBS wheels for improved traction.

(THE BELOW ISN'T TRUE, IS IT?)
The ACR had the interior enhancements of standard Vipers: power sideview mirrors, cloth-covered sun visors, a satin aluminum finish on gauge trim rings, parking brake handle and release button, shift lever shaft, gearshift knob and inside door release handles."

Thanks for any insight

**Camfab** · 11-30-2017

The spring and shock package on the 99 through mid 2000 cars should be exactly the same. It is the Koni 2812 race shock with Hypercoil springs. As far as the interior enhancements go, yes the ACR's had the same revised interior as other 99 cars. They also came with a ACR badge on the shifter console as well as 5 point harnesses. The audio and A/C could be put back into the car for extra cash, but the fog lights could not. All Vipers of that vintage came with the same Michelin Pilot's. The one piece forged wheels were also unique to the ACR as well as the 98 GT2 (called GTSR, but not a real GTSR). The real GTSR came with a wheel that looked identical, but was a knock off race wheel.

**BrianACR** · 11-30-2017

I think the BBS wheels on the GTS/R and the Gen II ACR's are the best looking wheels to be fitted on a viper.
I think there were very few produced with the a/c and radio deleted.