About M&M Fabwerx

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Over Two Decades of Precision Metal Fabrication & Off-Road Innovation

Since 2001, M&M Fabwerx has earned a reputation for excellence in custom metal fabrication and off-road vehicle builds throughout Chula Vista and Southern California. With a deep passion for engineering and an unwavering commitment to quality, we specialize in laser cutting, tube bending, flat sheet fabrication, and custom off-road modifications for enthusiasts and professionals alike.



We proudly serve clients across Chula Vista, San Diego, El Cajon, Spring Valley, Riverside, Temecula, and Del Mar, delivering projects that are as reliable as they are rugged.

Our Story — Built from the Ground Up

Founder Marco Montoya launched M&M Fabwerx in 2001 with a vision: to blend craftsmanship with cutting-edge fabrication techniques to support both weekend warriors and serious off-road racers. What started in a small garage has grown into a full-service fabrication facility equipped with advanced CNC machines, laser cutters, and welding bays—all under one roof in Chula Vista, CA.


We’re proud to have become a go-to destination for off-road enthusiasts, motorsports teams, and industrial clients looking for unmatched quality and turnaround.

Where We Work — Proudly Serving Southern California

While our shop is located in Chula Vista, our reputation brings customers from:

  • San Diego
  • El Cajon
  • Spring Valley
  • Riverside
  • Temecula
  • Del Mar

We’ve even had clients travel from out of state for custom off-road fabrication and laser cutting work. Whether you need on-site fitment or shipped components, we’re here to deliver.

What We Do Best

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Laser Cutting Services

Our shop is known for high-precision laser cutting that delivers clean edges and tight tolerances. Whether it's custom brackets, complex patterns, or batch production, we cut it right the first time—every time.

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Tube Cutting & Fabrication

We offer CNC tube bending and laser-cut tube profiling, ideal for roll cages, bumpers, suspension arms, and structural chassis components.

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Off-Road Fabrication

We build and reinforce off-road vehicles, including sand cars, pre-runners, UTVs, and buggies. Full chassis, bodywork, suspension mods—you name it.

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Aluminum Work

Our experienced fabricators handle all types of aluminum welding, machining, and part assembly—delivering lightweight strength with exacting standards.

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Reverse Engineering

Need a custom part that no longer exists? We can replicate or redesign it using sample components, sketches, or digital scans.

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Trusted by the Off-Road Community

"Marco is hands down the best fabricator in SoCal. Came from Utah for his work. He installed our Glazzkraft body kit perfectly and made custom mounts in a day!"

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 — Megan P. (Google Reviews)

“Marco does outstanding work and is always helpful. Had a rear bumper made for my truck, and it was solid—clean welds, great finish. Wouldn't go anywhere else.”

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— Jake L. (Yelp)

“I’ve worked with M&M Fabwerx for 17 years. You can’t beat the price, service, or reliability. These guys know off-road and deliver every time.”

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 — Steve M. (BirdEye)

Why Choose M&M Fabwerx?

  • Over 20 years of fabrication experience

  • High-performance equipment & precision workflows

  • Local and national reputation for off-road builds

  • Transparent timelines and upfront pricing

  • True one-on-one collaboration with our founder

We don’t just build parts—we build confidence.


FAQs About M&M Fabwerx

  • Do you only work on off-road vehicles?

    While we specialize in off-road fabrication, we also handle commercial and industrial metal projects—including parts prototyping and small-run manufacturing.

  • Can I bring in my own CAD file or sketch?

    Absolutely. We work with DXF, DWG, and PDF files—and can help convert or refine your drawings if needed.

  • Are walk-ins welcome?

    We recommend making an appointment, but we’re always happy to talk shop. Feel free to stop by during business hours to discuss your project.

  • Do you offer shipping for fabricated parts?

    Yes! We ship nationwide and carefully package custom components for safe delivery.

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Let’s Build Something Together

Ready to turn your vision into metal? Contact M&M Fabwerx today to start your custom fabrication project. Whether it’s a laser-cut component, a full race cage, or reverse-engineered part, we’ve got the tools—and the passion—to make it happen.