John's 4x4

Colorado's 4x4 Experts

Off Road Shop & Automotive Repair

150+ Years of Combined 4x4 Experience

Your Vehicle. Your Adventure. Our Expertise.

REV Outfitters is Colorado’s 4x4 and automotive repair destination, backed by more than 150 years of combined off-road outfitting, repair, and diagnostic experience.

We don't start with a parts catalog. We start with you. How do you use your vehicle? Where do you want to go? What do you want it to do? We'll help you determine what your vehicle needs, develop a plan, and build it around your priorities and budget.

From suspension, lifts, wheels and tires, armor, recovery gear, and performance upgrades to overlanding equipment, diagnostics, maintenance, and repair, REV Outfitters has the expertise to help you get more out of your 4x4—and keep it performing when it matters.

Build your Recreational Escape Vehicle.

Hear From Some Of Our 4x4 Off Road Tribe...

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Kelby Walsh
28 September 2026
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Trusted these guys when they told me what was good and bad with my car. No bs, no up sell, just good people doing a good job. Thank you team at rev for your excellent service and integrity!
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Ethan Hunt
24 September 2026
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Very friendly
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Nicholas Alexander
23 September 2026
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I had an issue with my 2023 Ram 2500 with the 6.7L Cummins, and I’m very glad I brought it to REV Outfitters in Johnstown. They were able to squeeze me in within a few days, while the dealerships in the area were quoting a minimum two-week wait. From the beginning, they listened to my concerns, quickly diagnosed the problem, and presented multiple options based on my needs and how much work I wanted to have done. They took the time to clearly walk me through the entire process, what the job would entail, and what I could expect. There was no ambiguity or pressure. They also provided recommendations for maintaining the truck and keeping it in great working condition going forward. Everyone I dealt with was kind, professional, efficient, and clearly took pride in the quality of their work. I would definitely recommend REV Outfitters to anyone looking for a knowledgeable and trustworthy shop, especially for diesel trucks.
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Matt Sendejo
22 September 2026
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Rev outfitters wad able to get me in and taken care of same week. Thanks for helping me out.
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Dave Schiff
14 September 2026
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God is this place good. I've taken a beater truck here that I've owned for 25 years to get repaired many times, when other shops don't want to bother. And I've brought in a brand new 3/4 ton to get customized to the point that my wife almost left me. In both cases (one vehicle I just wanted budget-friendly, effective repairs, and one where I wanted to go big), the repair and customization solutions they recommended and performed were incredible. There shouldn't be a place that can do flawless bread and butter repairs reliably and affordably, but also do exotic builds where budget is less of an issue. But that's what this place is. I would probably leave my wife for John's, except it's a shop and not a lady. And I'm not sure the marriage would hold up on paper.
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James Veal
13 September 2026
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They rebuilt my 6 year old icon suspension system and did a great. The job did take a little longer than expected but that was due to technical difficulty with needles for pressurizing the shocks, and the shop did a great job keeping me in the loop. Would 100% recommend this shop for any off-roading needs.
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Eric Edwards
5 September 2026
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Great guys, great work! The fella that drives the Subaru was especially helpful. Highly recommend taking your vehicle here.
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Joe Lhotka
3 September 2026
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1st Class work

Our 4x4 Off Road SHop & Repair Services

Off Road Shop

Overlanding

Platform consultation

Racks, awnings, & tents

Power supply

Storage & kitchen capabilities

Lighting and more.

Overlanding Details
4x4 reapir shop

4x4 Repair

Lifted 4x4 Alignments

Steering Repair & Upgrades

Suspension Repair & Mods

Shock & Coil-over Rebuilds

Axle & Differential

Custom Fabrication

4x4 Repair Details
Off Road Shop

Auto Repair

Alignments

Tire Rotate & Balance

Scheduled maintenance

Programming & Flash Updates

Suspension & steering repair

Drivetrain repair

Brakes, cooling system & more

Auto Repair Details
Schedule Appointment

Real Consultations. Real Expectations. Real Results.

OUTFITTING

We take the time to understand your adventure.

How do you use your vehicle? Where do you want to go? What do you want it to do? Is your vehicle ready for the build? What's your budget?

We start with a real conversation—not a parts list.

From there, we develop a build plan tailored to your vehicle, your priorities, your budget, and how you actually use it.

Every recommendation has a reason behind it, and every build has a purpose.

REPAIR

We diagnose the problem—not just the symptom.

A trouble code is a clue, not a diagnosis. A failed part is a result, not necessarily the root cause.

We ask why.

Why did the issue occur? Why did the code appear? Why did the part fail? What else could be affected?

We use a systematic diagnostic process to find the root cause rather than simply replacing parts and hoping for the best. Our diagnostic findings and testing are documented so you understand what we found, what we recommend, and why.

EXPERIENCE YOU CAN COUNT ON

Let's be real. 150+ years of combined 4x4 experience isn't something every shop can claim.

At REV Outfitters, our team brings more than 150 years of combined experience in 4x4 outfitting, repair, diagnostics, and vehicle builds.

That experience matters.

It means your vehicle isn't being treated like just another job. You're getting the collective knowledge of a team that understands how these vehicles are built, how they perform, how they fail, and how modifications affect the entire vehicle.

Real conversations. Real expertise. Real solutions. Built around you and your adventure.

Our Off Road Outfitting Process

01

Consult

We want to get to know you and how you plan to use your Overlander or Offroader, develop goals for the vehicle and work out a plan on how to achieve them! This initial consultation also includes discussing if the platform you have in mind will be suitable for your needs.

02

Plan

Need to acquire a vehicle? Leverage our pre-purchase inspection. Already have one? Let's get started on the pre-modification inspection to get to know your vehicle and understand what kind of maintenance will be required prior to modifying. Once we have established the scope of work, we take a deposit for parts and get you on the schedule.

03

Build

The real work begins here! We begin to modify your vehicle based on the plan. This could take 2-3 days or a couple of weeks depending on the scope of work. Upon delivery of your vehicle, we walk you through all the upgrades and modifications, how to use them, and ensure we have met your expectations.

Live your dream

As Colorado's #1 off road shop, we are committed to outfitting your rig to its fullest potential, unlocking the adventures of your dreams. See what our team of outfitting experts can do for you.

Technical Off Road Expertise

Product Experience

Education

Transparency

Let our Off Road Shop in Boulder & Johnstown and our Team of Service Advisors help you!

ready for a quote

Technical Expertise

Leverage our vast knowledge of chassis & suspension, drivability, diagnostics, electrical, and 4x4 alignments - all with a special focus on off-road capabilities.

Product Experience

We use what we sell and install! Not only do we know exactly how to install it, but we know what works for which application. From lift kit installation, off road led lights, to rooftop tents

Education

Our off road shop service advisors and technicians walk you through all aspects of your vehicle and your recreational escape vehicle build to ensure you understand the issue, component, and modifications made on your vehicle.

Transparency

We are completely digital. All inspections, diagnostics, and solutions are shared digitally and in-person whether it is for 4x4 repair or off road mods and lift kit installations.

Meet Seth! Seth talks about our off road shop in Johnstown, CO

Customer Video Seth

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What Our Customers Say

At REV Outfitters, our work speaks for itself—but our customers say it best. The customer feedback videos featured here offer a firsthand look at what it’s like to work with our team, from initial consultation to finished build and long after the vehicle leaves the shop. While each customer’s journey is unique, their stories consistently reflect the same core values: trust, quality workmanship, clear communication, and a shared passion for off-road adventure.

Built on Trust and Transparency

One of the most common themes echoed throughout our customer feedback is trust. Customers repeatedly highlight how important it was to feel informed and confident throughout the process. From digital inspections and detailed explanations to honest recommendations, our team takes the time to walk customers through what their vehicle needs—and just as importantly, what it doesn’t.

Rather than pushing unnecessary 4x4 upgrades or 4x4 repairs, we focus on education and transparency. Customers appreciate knowing exactly where their money is going and why. This approach builds long-term relationships, not one-time transactions, and it’s why many of our customers return to REV Outfitters for years to come.

Personalized Builds, Not One-Size-Fits-All

Every off-road vehicle has a purpose, and every owner has different goals. Our customers consistently point out that REV Outfitters doesn’t offer cookie-cutter solutions. Whether the goal is weekend trail runs, overland travel, daily driving comfort, or hard-use rock crawling, we tailor each off road build and 4x4 repair to match how the vehicle will actually be used.

In the customer videos, owners describe how our team listened carefully to their plans, budget, and expectations before recommending suspension systems, lift kits, or supporting upgrades. This collaborative approach ensures the final result performs exactly as intended—on the road, on the trail, and everywhere in between.

Quality Workmanship You Can Feel

From suspension installs and lift kits to diagnostics, repairs, and preventative maintenance, customers consistently speak to the quality of work performed at REV Outfitters. Attention to detail, proper installation, and doing the job right the first time are recurring points of praise.

Many of our customers describe noticeable improvements in ride quality, handling, and overall vehicle confidence after service. Others emphasize peace of mind—knowing their vehicle was worked on by technicians who specialize in 4x4 and off road platforms, not a general repair shop learning on the fly.

This commitment to quality is backed by our 3-year / 36,000-mile warranty on parts and labor, giving customers confidence long after their vehicle leaves our shop.

More Than a Shop—A Relationship

Several of our customers share that their first visit to REV Outfitters wasn’t their last. After experiencing clear communication, reliable service, and strong results, many choose to make REV Outfitters their go-to 4x4 shop for both major builds and routine maintenance.

This long-term relationship mindset is central to how we operate. We’re not just here for the install—we’re here to support your vehicle, your adventures, and your evolving needs over time.

A Shared Passion for Off-Road Adventure

Beyond technical skill, our customers often mention something harder to quantify: culture. REV Outfitters is built by off-road enthusiasts for off-road enthusiasts. That shared passion creates a welcoming environment where customers feel understood, respected, and excited about their builds.

The customer feedback videos reflect this sense of community. Owners aren’t just talking about parts and labor—they’re talking about confidence, capability, and the freedom to explore more with a vehicle they trust.

The REV Outfitters Difference

Our customer stories highlight what sets REV Outfitters apart:

  • Honest, transparent communication
  • Personalized recommendations based on real-world use
  • High-quality workmanship from experienced 4x4 specialists
  • Industry-leading warranty coverage
  • A long-term, relationship-driven approach
  • A shared passion for off-road and overland adventure

If you’re looking for a 4x4 shop that values your goals as much as the work itself, you’re in the right place. Watch the videos, hear directly from our customers, and see why so many drivers trust REV Outfitters with their vehicles.

Our R.E.V. Tribe

Welcome to John's 4x4 and REV Outfitters - Colorado's premier off road shop. With our unique vehicle knowledge, technical expertise, and focus on our customer's needs, we work incredibly hard to consistently deliver the recreational escape vehicle of your dreams. Whether you live in Fort Collins or Denver, we have two great locations - Boulder and Johnstown Colorado - to serve you.

You may be asking yourself: Why two brands? Don't worry, no one bought us. We simply are growing. We have added more solutions and services to meet the demands of our tribe. It's likely we will leave John's 4x4 to rest one day.

We don't just outfit a vehicle. We build recreational escape vehicles that enable our customers to leave the daily grind behind and explore the road less traveled creating experiences that last a lifetime.

The outfitted vehicle we help you build, is a physical space to seek and find the more meaningful things you desire. The opportunity to seek and find - not just nature, but one's self with the company of friends and family.

We believe outfitting is tribal. Become a part of our tribe...and build one of your own!

Austin Simons - Off Roader and Owner

Learn More about our brand name change

The John's 4x4 & REV Outfitters Off Road Shop Team

Off Road Shop and jeep mechanic

Visit Our Off Road Shops in Boulder or Johnstown

Cities We Serve

Proudly serving: Boulder, Erie, Broomfield, Johnstown, Longmont, Loveland, Fort Collins, Greeley & nearby Colorado areas.

Boulder Johnstown