This is a pair of Aluminum Shock Caps for the PRO-MT 4x4. Pro-Line has a new upgrade part for the Pro-Line PRO-MT 4x4 - Aluminum Shock Caps! The Aluminum Shock Caps add Strength, Durability and Style to a very important part of your truck. The Shock Caps are CNC machined Aluminum and Gunmetal Anodized to perfectly match the rest of your truck and have large laser engraved P-L logos on the front and back of the Caps. The Shock Caps comes in a pack of 2 with new inner diaphragms and they are a direct stock replacement upgrade for your PRO-MT 4x4.