COMPATIBILITY – Fits2008-2010 Ford F-250 Super Duty; 2008-2010 Ford F-350 Super Duty; 2008-2010 Ford F-450 Super Duty; 2008-2010 Ford F-550 Super Duty GET THE RIGHT PART -- Before purchasing, research to ensure that the part will fit your vehicle; enter all vehicle information (year, make, model, engine and trim) for compatibility and check qualifier notes IMPROVED HANDLING AND PERFORMANCE -- Reduces wheel shimmy, bump steer and vibration which helps minimize on- or off-road driver fatigue ACCOMMODATES LARGER TIRES -- Engineered for vehicles with oversized wheels and tires ENGINEERED TO LAST -- Features protective boot to safeguard shock rod and oil seal HANDLES EXTREME TEMPERATURE CHANGES -- Twin-tube cellular gas design filled with all-weather fluid allows for cooler operation, increased vehicle control and ability to withstand internal temperatures of -40 to 248°F BUY WITH CONFIDENCE -- Comes with Rancho’s Limited Lifetime Warranty