Trailer Repair Services Across Los Angeles County

Modern Trailer Supply Inc has been the go-to source for trailer repair in the greater Los Angeles area since 1947. From El Monte, we serve customers across LA County and beyond — bringing decades of hands-on experience to every repair job, big or small. Whether your trailer needs a brake overhaul, a busted axle fixed, or a full electrical rewire, we have the expertise and parts to get it done right.

We understand that a trailer out of commission means work doesn’t get done. That’s why we focus on honest diagnostics, quality parts, and repairs that last. No runaround, no upsells — just real trailer service from people who know trailers inside and out.

Our Trailer Repair Services

We handle the full range of trailer repair needs. Click any service below to find a page specific to your city.

  • Trailer Brake Repair — Drum brakes, electric brakes, hydraulic surge brakes, and brake controller issues
  • Trailer Axle Repair — Bent, cracked, or worn axles diagnosed and replaced to restore safe towing
  • Trailer Wheel Bearing Repair — Bearing repacks, replacements, and hub service to prevent dangerous failures
  • Trailer Light & Wiring Repair — Shorts, bad grounds, corroded connectors, and full rewires
  • Trailer Hitch Installation — Ball mounts, hitch receivers, wiring harnesses, and safety chains
  • Trailer Tires — ST-rated trailer tires in a wide range of sizes sold in-store
  • General Trailer Repair — Frames, couplers, jacks, safety chains, decking, and more

Serving All of LA County and Beyond

Our shop is based in El Monte, CA — centrally located in the San Gabriel Valley for easy access from across Los Angeles County. We regularly serve customers from Pasadena to Pomona, West Covina to Long Beach, and everywhere in between. Select your city below to find trailer repair information specific to your area.

Find Trailer Repair Near You

Why Choose Modern Trailer Supply Inc?

Since 1947, we’ve built a reputation on knowing trailers — not just selling parts, but understanding how everything works together. We stock an extensive inventory of trailer parts so repairs don’t have to wait on shipping. When you bring your trailer to us, you deal with experienced people who give you straight answers.

  • In business since 1947 — over 75 years serving Southern California
  • Parts and repairs under one roof — no waiting on outside suppliers
  • Experienced team with deep knowledge of all trailer types
  • Serving all of LA County and surrounding areas
  • Honest, no-pressure service every time

Get Your Trailer Back on the Road

Don’t let a broken trailer slow down your work or your weekend. Call (626) 251-7233 or contact Modern Trailer Supply Inc to describe what’s going on with your trailer. We’ll help you figure out the fastest path to getting it repaired and back in service.

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