Apex Chassis ProLock Complete Steering Kit | DOM Steel | 2014-2026 Ram 2500/3500 4WD | SKU: KIT385-STL

Brand: Apex Chassis | SKU: KIT385-STL | Material: Heavy-Duty DOM Steel | Lift Range: 2–6" | Gas & Cummins Diesel | Free Shipping | Affirm & Afterpay Available

You Lifted Your Radius-Arm Ram HD. Now Your Front End Is Deflecting.

You added a lift suspension, massive off-road tires, and serious trail protection to your late-model Ram 2500 or 3500. What you didn't anticipate was the front-end degradation. The frustrating highway wander, the continuous steering correction over pavement imperfections, and that looming threat of death wobble that turns simple highway driving into an exhausting battle.

That isn't a problem with your radius-arm suspension layout. That is your factory steering linkage—constructed from thin-walled, stamped steel tubing with sloppy adjustment threads—deflecting and bowing under the massive leverage of larger rolling mass and altered geometry. Under the punishing load of heavy towing or brutal trail impacts, factory steering links yield, introducing compliance that destroys directional stability.

The Apex Chassis KIT385-STL is the absolute engineering solution. This complete, maximum-duty steering overhaul combines both the tie rod and drag link into a unified, ultra-premium assembly. Engineered specifically for 2–6" lifted 4WD configurations on the 2014–2026 Ram 2500 and 3500 platforms, it utilizes high-tensile DOM (Drawn Over Mandrel) steel to provide extreme structural density where aluminum links reach their physical limits.

The Obsidian Take

We stock the Apex Chassis KIT385-STL DOM steel kit because it delivers the absolute highest level of structural defense available for the late-model Ram heavy-duty platform. While aluminum linkages are exceptional for standard trail memory-flex, heavy-duty rock crawling, job site abuse, and extreme-tonnage fifth-wheel towing demand the brute mass of thick-walled DOM steel. At a massive 63.4 lbs, this is the heaviest, most unyielding steering system in the entire Apex Ram HD lineup, built explicitly to withstand punishing terrain without buckling.

Apex completely bypasses the weak, failure-prone factory adjustment sleeves and friction clamps that slip out of spec under pressure. The KIT385-STL implements their patented ProLock™ mechanical keyway system, anchored by dual-thread jam nuts and integrated locking set screws. Once set, your toe and steering wheel center physically cannot back out or shift adjustment under heavy vibration or deep axle articulation. If you operate a high-torque Cummins or heavy HEMI truck under extreme conditions, this DOM steel overhaul is mandatory to lock down your front-end tracking permanently.

⚠️ Solid Axle Geometry Fact: The manufacturer installation instructions call for a professional adjustment of "caster, camber, and toe." The 2014–2026 Ram 2500/3500 4WD uses an AAM 9.25 solid front axle housing where factory camber is entirely fixed and non-adjustable from the factory. This replacement linkage assembly directly controls your front toe-in alignment and centers your steering wheel tracking plane.

⚠️ Unsprung Mass & Shock Mandate: Weighing a robust 63.4 lbs combined, this kit adds massive unsprung weight to your front axle. Factory or light-duty replacement shocks are physically incapable of dampening these tracking forces, which can degrade ride quality. Upgrading to high-quality, performance-valved shocks and an upgraded steering stabilizer concurrent with installation is mandatory to properly control this system.

Confirmed Fitment Matrix

CRITICAL FITMENT NOTE: This kit is geometrically and structurally optimized exclusively for the 2014+ radius-arm Ram HD front axle configuration.

❌ This Unit Does NOT Fit:

• 2013 or Older Ram HD platforms: Previous generation cross-over steering linkages utilize completely different track widths and taper angles (See the Apex KIT380 series).

• 2WD Ram Heavy Duty Trucks: Two-wheel-drive configurations use an independent front suspension system lacking a solid axle steering assembly.

• Ram 1500 Trucks: Light-duty independent suspension architecture; entirely incompatible.

Technical Specifications

Before You Order — 4 Fitment Checkpoints

This is a commercial-grade steering control assembly. To eliminate return freight liabilities and installation friction, verify these four checkpoints before checkout:

1. Model Year Verification: Ensure your truck falls strictly within the 2014–2026 range. If your truck is a 2013 or older, it uses the previous generation steering architecture.

2. 4WD Drivetrain Only: Confirm your truck is a true solid-axle 4WD configuration. 2WD heavy-duty trucks do not use this style of tie rod and drag link layout.

3. Lift Profile & Clearances: Designed specifically for 2–6" lifted setups. On unlifted, factory-height trucks, you must manually check lock-to-lock clearances to ensure link angles do not induce bump steer.

4. Dampening Upgrades: Ensure your front shocks and steering stabilizer are premium aftermarket units rated for high unsprung mass. Stock dampeners cannot properly control a 63.4 lb steering assembly over rough terrain.

Professional Installation & Mechanical Notes

This is an intermediate-to-advanced installation due to the physical weight of the DOM steel components. A professional alignment is mandatory post-install.

• Mandatory Post-Install Alignment: Swapping your entire tie rod and drag link completely alters front toe settings and steering wheel alignment. Do not operate at highway speeds until a professional alignment technician performs a precise front toe alignment. (Note: Camber is fixed on this front axle).

• Torque Parameters:

  • Castellated Nuts (Knuckles & Pitman Arm): Torque strictly to 70–90 ft-lbs, then advance the nut only enough to clear the window to insert the cotter pin. Never back off a torqued steering nut to align a cotter pin.

  • ProLock Jam Nuts: Torque precisely to Apex Chassis specifications to mechanically engage the internal locking keyway mechanism.

• Track Bar Alignment: For suspension lifts exceeding 4 inches, an axle-side track bar relocation bracket is highly recommended to keep your track bar and new drag link operating on parallel planes, preventing geometry-induced bump steer.

INSTALLATION WARNING: Running this 63.4 lb maximum-duty system with worn or stock factory shocks can result in aggressive front-end feedback. Once unboxed and bolted to the vehicle knuckles, this heavy-duty unit is non-returnable.

Questions We Get Asked

Why should I choose the DOM Steel kit over the Polished Aluminum Apex kit? While aluminum is exceptional for absorbing impact energy on standard trail rigs, thick-walled DOM steel provides maximum pure resistance to gouging and bending from sharp rocks. If your truck is a dedicated commercial tow vehicle, a heavy job site hauler, or a hard rock crawler, the pure structural mass of DOM steel is the ultimate choice.

Will this steering kit work with my factory pitman arm? For suspension lifts between 2 and 4 inches, this kit integrates perfectly with the factory pitman arm. For lifts exceeding 4 inches, you must cross-reference your drag link angle with your track bar; an aftermarket dropped pitman arm or track bar bracket may be required to keep them parallel.

Does this kit replace both the tie rod and the drag link? Yes. The KIT385-STL is a complete steering system replacement. It packages the ultra-heavy-duty DOM tie rod, the matching drag link, and all necessary ProLock high-misalignment greasable joint ends under one SKU.

Can I install this on my Ram 3500 Dually? Yes, provided your F-350/Ram 3500 is a 4WD configuration. It fits both Single Rear Wheel (SRW) and Dual Rear Wheel (DRW) standard solid front axle platforms perfectly.

Why Buy From Obsidian Forged Auto Supply

• Authorized Apex Chassis Dealer — Full manufacturer warranty protection with factory-direct product tracking.

• Free Freight Shipping, Lower 48 — Rapid heavy-duty transit with residential delivery included at zero hidden cost.

• Real Fitment Verification — Text (469) 407-7538 (SMS only) with your model year, lift size, tire dimensions, and shock setup before ordering. An Obsidian technician will manually audit your front-end clearance specs before processing your order.

• Premium Financing Available — Safe, instant checkout flexibility via Affirm and Afterpay.

2014–2026 Ram 2500 / 3500 4WD. Maximum-Duty DOM Steel. Lock down your steering tracking. Add to cart.

Disclaimer

The technical and product information presented above is compiled from data provided directly by the component manufacturer. Obsidian Forged Auto Supply maintains a rigorous engineering audit workflow to ensure vehicle fitment compatibility; however, we are not responsible or liable for sudden manufacturer-driven specification updates, raw metadata changes, or accuracy discrepancies in the foundational data sheets provided by the manufacturer.

Unsure if your current aftermarket shocks or track bar relocation brackets are up to handling this 63.4 lb setup? Text your exact front-end components to (469) 407-7538 and we'll confirm it.