Suspension > Shocks and Struts > Shock Absorber. RS9000XL, Rear, Quantity needed per vehicle: 2, with Dual Rear Wheels (DRW) with Rear Raised Height 0 (in). 2009 2010 2011 2012 Ford F-350 Super Duty Cab & Chassis 4WD.Performance Suspension & Shocks has been leading the way in off-road suspension technology. Whether you are headed down the street or down the trail, with Rancho performance products, your adventure starts here. Welcome to AusBoss Performance, your one-stop-shop for all your aftermarket and performance auto parts needs. We are committed to providing our customers with the highest quality parts and exceptional customer service at the best prices. Our team of experts has a passion for cars and a wealth of knowledge in the industry, ensuring that you receive the best advice and products for your vehicle. We understand that our customers are looking for top-notch performance, and that's why we only stock parts from the most reputable manufacturers. We are constantly updating our inventory to bring you the latest products and technologies. Shop with us today and experience the difference in quality and service.