In all there are more than 120 products from more than 33 states. However, the builders do acknowledge that using American products can be more expensive. A box of nails is $5 more than those made in China and steel is $146 more a bundle. Even though certain goods are more expensive, ...
For the rear the best I've found is the Zefal Swan. It mounts on the seat post and can tilt into the desired position. For the front my main priority is to protect the spray area between 2 o'clock and 4 o'clock. If mounting a guard on the downtube, then the Zefal Croozer, SKS...