Swagman Bumper Mount Bike Rack 4 Bike. Swagman designed these Bike Holders to fit 4 to 4.5-inch continuous welded steel bumpers so that you can get the look you want with the vehicle you love. This Swagman 80600 Bumper Mount 4-bike Bike Rack features heavy-duty steel construction and can hold up to 30 pounds per bike. Keep the Swagman 80600 Bumper Mount 4-bike Carrier by your side and get on the road with your friends and family. Package Contents: Swagman 80600 Bumper Mount Bike Rack 4 Bike Swagman 80600: Bumper Mount Bike Rack 4 Bike