Who Is Core 4x4? Adjustable Control Arms, Track Bars, Steering & Off-Road Parts
Core 4x4 builds off-road suspension parts. That is the short version. The longer version involves a team of fabricators, welders, and off-road enthusiasts who design, manufacture, and test every product under one roof in the United States. If you have ever wondered who is behind the orange logo on your control arms, track bar, or steering kit, here is your answer.
Quality Over Quantity – The Core 4x4 Philosophy
As founder Spence Schramm puts it: “We build off-road suspension parts. We have always been focused on quality over quantity.” That is not just a tagline. It shapes every decision at Core 4x4 – from which materials get sourced to how many processes stay in-house instead of being farmed out to third-party shops.
Most aftermarket suspension companies outsource at least part of their manufacturing. Core 4x4 keeps the entire production chain under their own roof: raw material intake, CNC machining, welding, powder coating, assembly, and final inspection. When you order a set of adjustable control arms from Core 4x4, the same team that designed them also built them, tested them, and packed them for shipping.
What Does Core 4x4 Manufacture?
Core 4x4 started with adjustable control arms for Jeeps, but the product line has expanded significantly. Here is a breakdown of what they build:
Adjustable Control Arms
This is the product that put Core 4x4 on the map. Every control arm is adjustable, allowing you to dial in your suspension geometry after a lift. Core 4x4 offers three tiers:
- Camp Series – Entry-level arms with a polyurethane bushing on one end and a Johnny Joint on the adjustable end. Built for daily drivers and weekend trail rigs.
- Crawl Series – Mid-range arms with Johnny Joints on both ends for full articulation. The go-to choice for enthusiasts who want precision tuning without spending top dollar.
- Stage 3 Series – Heavy-duty arms designed for big lifts, 37-inch or larger tires, and serious rock crawling. The strongest arms Core 4x4 makes.
Track Bars
Adjustable track bars are critical after any lift because the factory track bar cannot compensate for the change in geometry. Core 4x4 builds front and rear track bars for Jeep Wranglers, Cherokees, and Ram trucks – all adjustable, all with the same in-house manufacturing standard as their control arms.
Steering Components
Death wobble. Wandering. Vague steering feel. These are common complaints on lifted trucks and Jeeps, and they almost always trace back to worn or undersized steering components. Core 4x4 manufactures:
- Heavy-duty tie rods and drag links
- Steering stabilizer brackets and kits
- Complete steering upgrade packages for Ram 2500/3500, F-250/F-350, and Jeep platforms
Sway Bars and End Links
Adjustable sway bar end links and disconnects round out the suspension package. These are especially popular on Toyota Tacoma, 4Runner, and Jeep JK/JL builds where trail flex matters.
Complete Suspension Kits
For builders who want a matched system rather than piecing together individual parts, Core 4x4 offers complete lift kits that include control arms, track bars, bump stops, and hardware – all designed to work together.
In-House Manufacturing: From Raw Steel to Finished Product
What does “in-house manufacturing” actually mean at Core 4x4? Here is the process:
- Design and engineering – Every part starts as a CAD model. Core 4x4 engineers each component to address the specific failure points and limitations of factory parts.
- CNC machining – Precision components are cut on CNC mills and lathes. This is where Johnny Joint housings, adjustment sleeves, and mounting hardware get their exact dimensions.
- Welding – All welding is done by Core 4x4 welders, not contract shops. Every weld is inspected before the part moves to the next station.
- Powder coating – Parts are powder coated for a durable, corrosion-resistant finish. Core 4x4 offers 10 standard colors, all applied in-house.
- Assembly and QC – Final assembly includes torque verification, fitment checks, and visual inspection. If a part does not meet the standard, it does not ship.
Keeping all of these processes under one roof means Core 4x4 can catch and fix problems the same day they are found. It also means faster turnaround on custom orders – typically 3 to 5 business days for standard colors.
Tested on the Trail, Not Just in the Lab
Core 4x4 does not just build parts and hope they work. The team tests everything on their own rigs. As Spence says in the video: “We make parts to be used. We like to go out, we like to off-road, do all our own testing.”
That testing happens on real trails, with real loads, in real conditions. When the team identifies a weakness – a bushing that wears too fast, a weld that takes unnecessary stress, a clearance issue that shows up at full droop – it gets redesigned and retested before the product goes to market.
This is why Core 4x4 can stand behind a lifetime guarantee on every product. They have already put each design through the kind of abuse that most customers will never match.
Vehicle Applications
Core 4x4 builds suspension and steering components for a growing list of vehicles:
| Platform | Products Available |
|---|---|
| Jeep Wrangler TJ / LJ | Control arms, track bars, long arm kits, steering, lift kits |
| Jeep Wrangler JK | Control arms, track bars, steering, sway bar links, lift kits |
| Jeep Wrangler JL / Gladiator JT | Control arms, track bars, steering, bump stops, lift kits |
| Jeep Cherokee XJ | Control arms, track bars, long arm kits, leaf spring shackles |
| Jeep Grand Cherokee ZJ / WJ | Control arms, track bars, long arm kits |
| Toyota Tacoma | Upper control arms, sway bar end links, rear suspension |
| Toyota 4Runner | Upper control arms, rear suspension |
| Ford Bronco (6th gen) | Control arms, lift kits |
| Ford F-250 / F-350 | Steering kits, track bars |
| Ram 1500 | Control arms, rear axle components |
| Ram 2500 / 3500 | Control arms, steering kits, track bars, long arm kits |
New applications are added regularly as the engineering team develops and tests fitments for additional platforms.
The Lifetime Guarantee
Every Core 4x4 product ships with a lifetime guarantee. If you break it, they replace it. No expiration date, no fine print, no arguing. This is not a marketing gimmick – it is a direct reflection of the confidence that comes from building every product in-house and testing it on the trail before it ships.
The guarantee covers all control arms, track bars, steering components, and suspension kits sold directly through Core 4x4 or through authorized dealers.
How to Get Started
Whether you are building a daily-driven Jeep, a weekend trail rig, or a dedicated rock crawler, Core 4x4 has a product line and a price point that fits. Here is how to get started:
- Browse the catalog: Visit core4x4.com/shop and filter by your vehicle
- Need help choosing? Email sales@core4x4.com or call (385) 375-2104. You will talk to a real person who knows the products.
- Custom orders: If you have a unique setup or need arms built to specific measurements, Core 4x4 handles custom orders with a 3–5 day turnaround
- Follow the builds: Subscribe to the Core 4x4 YouTube channel for install guides, trail tests, and shop builds
Frequently Asked Questions
Shop Core 4x4
Core 4x4 – Adjustable control arms, track bars, steering, and off-road suspension parts. Made in the USA. Backed by a lifetime guarantee. sales@core4x4.com | (385) 375-2104
