Trailer Axles for Sale
Shop trailer axles for utility trailers, cargo trailers, equipment trailers, boat trailers, RVs, and custom trailer builds. The Trailer Parts Outlet carries a wide selection of replacement trailer axles in common capacities, including 2K, 3.5K, 5.2K, 6K, 7K, 8K, 10K, 12K, and 16K options.
Choose from idler trailer axles, electric brake axles, drop axles, torsion axles, cambered RV axles, Dexter-compatible axles, TK axles, and heavy-duty trailer axle assemblies. Whether you are replacing a worn axle or building a trailer from the frame up, this collection helps you compare axle capacity, hub face, spring center, bolt pattern, brake type, and trailer use.
Find the Right Trailer Axle by Capacity
Your trailer axle capacity should match your trailer’s load requirements. Light-duty trailers commonly use 2K or 3.5K trailer axles, while larger utility, equipment, dump, and gooseneck trailers may require 5.2K, 6K, 7K, 8K, 10K, 12K, or heavier axle options.
If you are building a tandem or triple axle trailer, you may need a complete axle kit instead of a single replacement axle. Shop specific kit collections such as 5.2K trailer axle kits or 8K trailer axle kits based on your trailer’s total capacity, suspension setup, and intended load.
Idler, Electric Brake, Drop, Torsion, and RV Trailer Axles
Different trailer builds call for different axle styles. Idler axles are commonly used on lighter trailers or applications where brakes are not required on that axle. Electric brake trailer axles add stopping support for heavier loads and highway towing. Drop axles lower trailer deck height, while torsion axles provide independent suspension and a smoother ride. Cambered RV axles are designed to improve tracking and tire contact under load.
Many of our trailer axles are available with common hub face and spring center measurements, with select custom options available for non-standard trailer builds. You can also shop compatible trailer hubs and drums, trailer brakes, bearings, races, seals, and caps, and u-bolts to complete your repair or build.
How to Measure a Trailer Axle
Before choosing a replacement trailer axle, measure from hub face to hub face and from spring center to spring center. Hub face is the distance between the wheel mounting surfaces. Spring center is the distance between the center points of the spring seats. You should also confirm axle capacity, bolt pattern, brake type, tube size, and whether your trailer uses a straight, drop, torsion, or cambered axle.
Ordering by capacity alone is not enough. A 3.5K trailer axle, for example, can come in several hub face and spring center combinations. Confirming your measurements before checkout helps prevent fitment issues and keeps your trailer road-ready.
Shop Trailer Axles from The Trailer Parts Outlet
The Trailer Parts Outlet supplies trailer axles for repairs, replacements, upgrades, and new trailer builds. Browse this collection to compare axle sizes, capacities, brake options, lug patterns, and compatible trailer applications. If you need a full axle package instead of a single replacement axle, explore our axle kit collections for single, tandem, and triple axle setups.
