Yamaha ATV owners, these NICHE ball joints are direct replacements for your worn-out suspension components. Specifically designed for Yamaha Kodiak 450, Grizzly 550, and Grizzly 700 models from various years. Replaces OEM part number 3B4-23579-01-00 with the exact same M10x1.25 thread size. The chloroprene rubber boots hold grease well and protect the ball joint from dirt and moisture. Comes as a 2-pack so you can do both sides at once - because if one is worn, the other probably isn't far behind. Worn ball joints cause steering looseness, vibration, and unusual noises, but the real danger is if they separate completely while riding. Installation requires some mechanical knowledge but is very doable with basic tools. Much more affordable than dealership parts while still providing reliable performance. Whether you're fixing existing play in your steering or doing preventative maintenance on a high-mileage ATV, these ball joints will restore that tight, precise steering feel you remember from when your machine was new.