Check out our guide on how to install poly fenders.
Protection from debris and spray is great, but what good are fenders without an equally durable mounting kit to secure them to the truck? Robmar’s bolt-on, universal mounting hardware kits come standard with 1.875” powder-coated, steel tubes. Each straight tube has a robotically-welded, threaded plug for installation to the frame of your truck with the included mounting bolts. Offset tubes bolt on with an included nut.
We offer both straight and offset/bent tube kits. The straight tube kits are great for cost savings. Offset tube kits are the most popular version due to their added adjustability. The bend allows you to rotate the tube around, before its tightened down all the way, to achieve the best mounting position possible.
The tubes neatly fit into their tough, nylon hangers, which are designed to withstand shock and vibration that is almost guaranteed while on the road. Each fender is secured to the nylon hangers with an elevator bolt and custom plastic washer plate. The washer plate is designed to fit up into the rib, to keep it up and away from the tire.
Single axle systems use a tube on each side for support, while half and full tandem sets utilize our center bracket assembly for support between two tandem axles. The center support arm is made of extra-rigid HDPE for additional strength. This support arm connects to the steel swing arm with u-bolts for more adjustability.