CONNX

CONNX Trailer Running Gear

CONNX is a trailer components brand known for the hardware that keeps a trailer rolling straight and carrying its load: axles, hubs, spring seats, bearing kits and fenders. Whether you tow a utility trailer, a cargo hauler, a boat trailer or an RV, these are the parts that take the constant stress of road miles, and CONNX focuses on replacement and repair components that cover them.

Trailer Axles Built Around Common Capacities

The axle is the backbone of any trailer, and CONNX offers straight axles in a range of capacities and hub-face lengths. Models such as the S3572SL are rated at 3,500 lb with a 72-inch hub face, and the line also includes lighter 2,000 lb axles and heavier leaf-spring axles for larger loads. Many of these axles use a Super Lube system, which lets you add grease without taking the wheels or hubs apart, and they typically ship with a castle nut and washer. When replacing an axle, measure hub face to hub face, confirm the tube diameter and match the capacity to your trailer's gross weight rating.

Bearings, Hubs and Spring Seats

Wheel bearings are among the most common trailer wear items, particularly on boat trailers that get submerged. A complete kit such as the CONNX BK7000, designed for a 7,000 lb axle, makes it easier to refresh both sides with matched components. Spring seats, offered in sizes like 1.75 inch and 2.375 inch to suit different axle tube diameters, locate the leaf springs on the axle and are worth checking whenever you inspect your suspension for cracks, rust or movement.

Fenders for Protection and Appearance

Fenders keep road spray, gravel and debris off the trailer body and anything stored on it. CONNX offers square-style single-axle and tandem-axle fenders, and some versions are described as electro-polished for resistance to atmospheric and salt-water corrosion. That makes them a practical consideration for trailers used near the coast or launched from boat ramps.

What to Consider When Shopping

• Capacity: Match axle and bearing ratings to the loaded weight of your trailer, not just its empty weight.
• Dimensions: Hub-face length, tube size and spring-seat diameter all need to agree with your existing frame and suspension.
• Environment: Trailers exposed to salt water or road salt benefit from corrosion-resistant finishes and regular bearing service.
• Maintenance: Inspect bearings, seals and spring seats on a regular schedule, especially before long trips.

For anyone repairing an older trailer or building a new one, CONNX provides a focused catalog of dependable running-gear components in common sizes.