Sumo Spring Rear Bump StopUpgrade your Sprinter's suspension with the Sumo Spring Rear Bump Stop, designed to increase the rear suspension spring rate for improved control and comfort. Made from proprietary closed microcellular urethane, these bump stops are perfect for vans that carry heavy loads or tow trailers. With a 900LB spring rate, they reduce sway and suspension sag, ensuring a smoother ride. Whether you're driving on rough roads or in heavy winds, the Sumo Spring
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