Trailer Parts Catalog — Couplers, Hanger Kits, Hitch Mounts & U-Bolts

TractorTrailerParts manufactures a focused range of trailer parts for the US market — including A-frame and adjustable trailer couplers, hanger and suspension kits, trailer hitch ball mounts and trailer U-bolts — for utility trailers, agricultural trailers, boat trailers, cargo trailers and OEM trailer assemblies.

Trailer couplers including A-frame and adjustable couplers for 2 inch and 2-5/16 inch balls

Trailer Couplers

A-frame and adjustable trailer couplers in 2-inch and 2-5/16" sizes — manufactured for reliable trailer-to-vehicle connection, high tongue-weight ratings and long service life.

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Single axle and tandem axle trailer hanger kits and leaf spring suspension kits

Hanger Kits & Suspension Kits

Single-axle and tandem-axle hanger kits, spring hangers, equalizers, shackles and complete leaf-spring suspension kits for 2K to 7K axle ratings.

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Heavy-duty adjustable trailer coupler with 2-5/16 inch ball socket and channel mount

Adjustable Trailer Couplers

Heavy-duty adjustable channel-mount couplers (2-5/16") in capacities up to 25,000 lbs — for utility, livestock, cargo and construction-grade trailers.

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Trailer hitch ball mounts with various drop and rise dimensions for Class III and Class IV receivers

Hitch Ball Mounts

Drop and rise trailer hitch ball mounts for 2" receivers, in Class III and Class IV ratings — for 2" and 2-5/16" hitch balls.

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Round and square trailer suspension U-bolts in multiple diameters and finishes

Trailer U-Bolts

Round and square trailer U-bolts in multiple diameters, thread pitches and finishes — for trailer suspension, axle mounting and custom trailer assembly.

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Common Questions About Our Trailer Parts

What sizes of trailer couplers do you supply?

We supply trailer couplers in standard US ball sizes — 2-inch and 2-5/16" — in both A-frame and adjustable channel-mount styles. Capacities range from 3,500 lb up to 25,000 lb GVWR depending on style.

What axle ratings do your hanger and suspension kits fit?

Our trailer hanger kits and suspension kits cover common US axle ratings: 2,000 lb, 3,500 lb, 5,200 lb, 6,000 lb and 7,000 lb. Available in single-axle and tandem-axle configurations with double-eye and slipper-spring designs.

Are your trailer U-bolts available with nuts and tie-plates?

Yes. Trailer U-bolts can be supplied complete with grade-8 nuts, washers and matching axle tie-plates. Diameter, length, bend, thread and finish (zinc plate, hot-dip galvanized or raw) are customizable.

Can you private-label or co-brand the trailer parts for our distribution business?

Yes. We support private-label and co-branded packaging for trailer parts distributors, wholesalers and OEM trailer manufacturers in the United States. Send us your label artwork and we'll quote.