These East Lake CV axles and wheel bearings have been exactly what my Polaris RZR XP Turbo S needed after some rough off-road riding! The set includes everything you need for replacement - complete CV axle assemblies with wheel bearings that are direct OEM replacements. The 4340 chromoly steel construction feels incredibly durable and much stronger than the stock axles. The installation was straightforward and they fit my 2019 RZR XP Turbo S perfectly with no modifications needed. What's impressive is how well they've held up through some seriously tough terrain - no clicking, binding, or vibration issues that I had with my worn-out original axles. The neoprene boots seem quality and haven't torn despite exposure to mud, rocks, and water. The one-year warranty gives me confidence in the product's reliability. If you own a 2018-2021 Polaris RZR XP Turbo S and need to replace your CV axles, this East Lake set is definitely worth considering. They've restored my UTV's performance completely and have handled everything I've thrown at them so far!