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
We sell trailer axles from 2,000 lb to 16,000 lb capacity. We stock idler axles, electric brake axles and torsion axles. We also sell complete axle kits with springs, hangers and u bolts.
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 trailer axle kit collections for single, tandem, and triple axle setups.
FAQs
- What size trailer axle do I need? Add the weight of your empty trailer to the weight of your heaviest load. Divide that number by the number of axles. Choose an axle above that number.
- What is the difference between an idler axle and a brake axle? An idler axle has no brakes. A brake axle has an electric brake drum at each end. A brake axle needs a brake controller in your tow vehicle.
- What is a torsion axle? A torsion axle has rubber cords inside the tube in place of leaf springs. It gives a smoother ride and it sits lower than a spring axle.
- How do I measure my old trailer axle? Measure from the centre of one hub face to the centre of the other hub face. Then measure between the spring seats.
- Do your axles fit Dexter hubs? Yes. Our axles use the same bolt patterns and the same bearing sizes as Dexter axles of the same capacity.
