Compatibility: Compatible with Polaris RZR 170 (No year limited) High Performance: The Swing Arm is made of high-grade steel material, and the surface is finished with Powder Coated, which can improve rust resistance, age resistance and enhance durability Shock-Absorbing Function: The UTV Rear Swing Arm is located in the suspension, which can play a role in shock absorption on uneven roads and make your vehicle more stable during driving Installation: Use screws to install. Recommend professional installation Package Includes: 1 x Steel Swing Arm. Please Note: Mounting hardware & Instruction are not included