DescriptionShock extensions are designed to keep the shock as vertical as possible when lowering the rear of your vehicle. Contrary to popular belief, they\'re not designed to extend the length between the mounting points.Applicationcompatible for Chevy Silverado C1500 Pick-ups 2WD 1988-1998 compatible for GMC Sierra C1500 Pick-ups 2WD 1988-1998SpecificationDrop Length: Rear 3\'\' to 5\'\'Package Includes:2xShock extender bracket6xBolt M12 * 1 . 5 * 4Material:Q235，35#Weight:1.7kgPackage Size:17.5*15.5*8.2cmWarranty: 1 YearFeatures1.While lowering a truck, you are required to adjust the length of shocks. to adjust the length of shocks in a more efficient and convenient way.2.You can further set up the longer shock to make your truck maintain the same ride throughout the trip.3.Feature: Shock absorber extensions are designed to be use with factory shocks on the vehicle with 3-5\" front lift ​to reduces over extending pistons so that your factory shocks can be reused without compromising ride quality4.Rear Drop Lowering Shock Extender Extension Brackets for 3\" to 5.5\" lowered trucks to reuse the original stock length shocks, maintains your smooth factory ride which is more affordable than replacing your stock shocks with costly shortened stiff aftermarket specialty shocks.NoticeInstruction include, professional installation is recommendedPlease do not hesitate to contact us for anything we can help.