The A-arm bushings in a Polaris RZR should be replaced when they show signs of wear, such as excessive looseness, cracking, or squeaking. It's also a good idea to inspect them regularly and replace them as part of your routine maintenance schedule to ensure optimal performance and safety.

We recommends you use "Green Grease" waterproof grease or Bell Ray waterproof grease. Both options will help ensure you will get the longest life out of your bushings.

To avoid the risk of immediate failure of the bushings in your Polaris RZR, it's advisable to install new ones whenever you are replacing A Arms or other related components. During removal and reinstallation, bushings can get damaged, leading to problems down the line. We always recommend to install new bushings as a preventative measure whenever replacing related parts.