Fatbike owners, this Thule UpRide adapter is exactly what you need to transport your wide-tire bike! If you've got a Thule UpRide roof bike carrier (sold separately), this simple adapter lets you carry bikes with 3-5 inch wide tires - perfect for your fat bike adventures. The adapter replaces the standard wheel holder on your existing Thule UpRide rack, giving you the extra width needed to securely hold those big fat tires. Thule is known for their quality and this adapter is built to the same high standards - durable materials, secure fit, and reliable performance at highway speeds. Installation is straightforward and once it's on, you can trust that your expensive fat bike will arrive safely at the trailhead. No more struggling to fit wide tires into standard bike racks or worrying about your bike coming loose during transport. This adapter works exclusively with the Thule UpRide system, so make sure you have the compatible rack before ordering. Whether you're heading to the mountains for some snow biking or hitting the beach trails, this adapter makes transporting your fat bike safe and convenient. It's one of those specialized accessories that solves a specific problem perfectly. Stop trying to make standard bike racks work with your fat tires and get the proper equipment designed specifically for the job. Your fat bike (and your peace of mind) will thank you!