Give your RS1 an extreme upgrade with these 1 inch extended rear trailing arms. This will give your RS1 a 1 inch longer wheel base and help you tackle those hills that were once too much for your RZR. Thanks to the extra inch of clearance these arms will now allow you to run 40 inch+ tires!! (NOTE: you will need to upgrad your front suspension to clear larger than 30 inch tires up front). These are designed to maintain factory alignment and add some stability and strength to your RS1. The Extrended Trailing Arms are constructed with leading edge CAD software, and made from high strength steel plating. They come with a lifetime warranty and they are built for you to throw whatever punishment you can at them!! Upgrade your RZR RS1 with Super ATVs Extended Rear Trailing Arms today!! - Our Super ATV Rear Trailing Arms generally ship out within 1 business day! - Fits: Polaris RZR RS1 : 2018+ - 1 Inch Rear Offset for more Stability and Strength - Made from high strength steel - Clears 40 Inch Tires! (NOTE: you will need to upgrade your front suspension) - Available in multiple colors - Lifetime Warranty on Arms by Super ATV - Manufacturer's part# RTA-P-RZR1K-001 Installation Instructions