Common on European utility bikes, a front wheel stabilizer makes loading front racks simpler. It is a spring connecting the fork to the down tube. It adds a subtle self centering action to the front wheel, making loading and unloading of a bike with a basket, or say, our Porteur Rack much easier. The spring also offers some resistance to steering, so it counteracts deflections from hitting potholes and road debris. - Mounts to the back of the fork crown via brake bolt or through bolt - Fork crown mount diameter is made to fit an M6 bolt - common on nutted calipers - Use Sheldon's Fender Nuts to work with recessed brake bolts - Rust resistant and includes all required brackets and hardware - Available for Small (31.8mm and smaller) and Large (38-62mm) sized downtubes