1 pair of sienna rear bump stops replacement for 1998-2003 1st generation Sienna. Made from premium polyurethane foam with steel top. Huge improvement once installed. Direct replacement, rigorously tested, durable and long lasting. Designed to absorb impact and reduce stress on the suspension system, ensuring a safer ride. Easy installation, Just jack up your vehicle, Pull out the old crusty jounce bumpers and screw these right in.