Traxxas 9180-GRAY Outer Driveline & Suspension EHD Gray Upgrade Kit 2WD Stampede, Rustler, BigfootTraxxas 9180 GRAY 2WD Extreme Heavy Duty Upgrade Kit The Extreme Heavy Duty Upgrade Kit transforms your already tough 2WD Stampede, 2WD Rustler, or 2WD BIGFOOT into the ultimate bashing machine. Engineered for brushless power systems, the kit includes a full complement of driveline and suspension parts designed to work together as a complete package. Whether you're sending it at the skate park or preparing for a speed run, the Extreme Heavy Duty