Like the rest of our SSV rear arm protectors and skid plates, these Rear A-Arm Protectors shield and protect the underside of your vehicle and its suspension. Our side-by-side rear arm protectors are made with high-strength aluminum. For durability and reliability, there's no better choice. Keep riding with peace of mind. Performance & Handling Extra underside protection for your vehicle's suspension (A-Arm). Construction & Durability For ultimate durability and strength, all our Aluminum Skid Plates are made with High Strength 5052 H32 Aluminum 3/16 (4.5 mm) thick. Included Sold in pairs.