Ten-stage velocity sensitive valving - Provides tuning specific for each vehicle5/8-in. (16mm) diameter piston rod (select applications) - Adds strength and durability1 3/8-in. (35mm) diameter piston (select applications) - Ensures performance in any environmentProtective boot included - Protects the shock rod and oil sealBrandRanchoModelRS5386Item Weight5.6 poundsProduct Dimensions24.2 x 6 x 6 inchesItem model numberRS5386Manufacturer Part NumberRS5386Thanks for looking and have a nice day!!!!!!!!!!!!!! FREE! Sellers: Add a FREE map to your listings. FREE!