WRC GTX hard compound front & rear arms
Coming from Italian company WRC and made for the GTX 1/8th on-road car are hard compound front and rear arms. Less flexible compared to the standard arms, the reinforced items improve the car’s performance especially in high-grip conditions and in high ambient temperatures. The sets include both the upper and lower arms including needed shims and spacers.
Source: WRC [wrc-racing.com]