Spring axles do not require welding, which makes them easy to install. With easy upkeep and replaceable components, they are a more affordable trailer option than torsion axles. You can replace all worn components by unbolting the existing parts and bolting the new ones. Blueswift Axles custom builds spring axles, allowing you to select the axle width, spring, hub, brake and stud size to suit your needs and specifications.