The Trek Full Suspension 17X30X7Mm Heavy Contact Sealed Bearing is designed for avid cyclists who demand the best performance from their bikes. This part is a crucial component of your bike's suspension system, specifically designed for full suspension bike applications. Featuring a heavy contact seal, it provides exceptional protection against dirt and moisture to enhance your ride even in grueling conditions. As genuine replacement parts, they restore your suspension performance and compatibility. What's more, these are the same bearings used during bike assembly, promising proven quality. Whether you're navigating rocky terrains or speeding down slick, muddy trails, this sealed bearing ensures a smooth, uninterrupted ride every time.