Similar to the original road racing version of the GS1R, the new 18x5 inch "Skinny" version of the one piece forged monoblock GS1R is precision-machined from a single forging of proprietary 6061-T6 aluminum alloy. But unlike the original road racing version, the "Skinny" has been re-engineered to be optimized for drag racing applications. This includes not only the narrower width (which necessitates a unique narrow forging), but a full set of revised performance metrics to make the 18x5 inch GS1R-6 "Skinny" as lightweight as possible. The GS1R-6 Skinny has been designed specifically for vehicle applications with 6-lug hubs, including the Dodge Viper.
