Apex Chassis KIT385-STL ProLock Complete Steering Kit — Heavy-Wall DOM Steel | Black Powdercoat | 2014–2026 Ram 2500 / Ram 3500 4WD | SRW & DRW | 2–6" Lift | Gas, 5.7L HEMI, 6.4L HEMI & 6.7L Cummins

Maximum structural density. One kit. Front end locked permanently.

Factory tie rod and drag link sleeves on the 2014–2026 Ram HD flex and bow under the massive leverage of larger tires, heavy wheel offsets, and the immense weight of a 6.7L Cummins over the front axle — feeding the highway wander, continuous steering correction, and death wobble that turns simple driving into an exhausting battle.

The Apex Chassis KIT385-STL is the absolute engineering solution. A complete maximum-duty DOM steel tie rod and drag link assembly with the ProLock mechanical keyway system — engineered specifically for the 2014–2026 Ram 2500 and Ram 3500 4WD radius-arm platform at 2–6" of lift. For the builds where aluminum reaches its physical limits — dedicated rock crawlers, heavy job site haulers, and extreme-tonnage fifth-wheel towing rigs where the linkage takes direct hits and the front end cannot flex.

Why DOM steel over aluminum on this application: While polished aluminum delivers exceptional performance on daily drivers, tow rigs, and trail builds where flex memory and unsprung weight reduction are the priority — thick-walled DOM steel provides maximum pure resistance to gouging and permanent bending from sharp rock contact. For dedicated rock crawlers, heavy job site haulers, and extreme-tonnage fifth-wheel towing platforms where the linkage takes direct hits against hard surfaces — DOM steel is the correct material. The DOM process eliminates the internal weld seam and produces a uniform wall thickness that resists localized crushing forces that aluminum cannot handle at the same cross-section.

Unsprung mass note — read before ordering: At 63.4 lbs combined this is the heaviest, most unyielding steering assembly in the Apex Ram HD lineup. Factory and light-duty replacement shocks are not optimally valved to dampen these tracking forces over rough terrain. Upgrading to high-quality performance-valved shocks and an upgraded steering stabilizer concurrent with installation is strongly recommended.

✅ This kit fits — radius-arm solid front axle 4WD

❌ This kit does NOT fit — read before ordering

2013 year-split — confirm before ordering: Ram updated the Ram 3500 to the radius-arm front suspension in 2013 — a full model year before the Ram 2500 made the same transition. If your truck is a 2013 Ram 2500, this kit will not fit — see the KIT380 series. If your truck is a 2013 Ram 3500 on the radius-arm platform, confirm fitment by texting (469) 407-7538 with your VIN before ordering.

⚠️ Camber note for alignment shop: The 2014–2026 Ram HD runs an AAM 9.25 solid front axle where factory camber is entirely fixed and non-adjustable without aftermarket offset ball joints. Post-install alignment corrects toe and centers the steering wheel — camber remains fixed. Inform your alignment tech before the appointment.

⚠️ Shock and stabilizer compatibility: At 63.4 lbs, performance-valved front shocks and an upgraded steering stabilizer are strongly recommended alongside this kit. Running factory or light-duty replacement shocks with this assembly can result in aggressive front-end feedback over rough terrain.

Supporting mod requirements:

• Lifts 2–4": Direct bolt-on with factory pitman arm. No additional hardware required beyond the kit.
• Lifts exceeding 4": Verify drag link angle relative to your track bar. A track bar relocation bracket or aftermarket dropped pitman arm may be required to keep both on parallel operating planes.

Before You Buy — Questions We Get Asked

Q: Why choose DOM steel over the polished aluminum KIT385-POL?

Both cover the same 2014–2026 Ram HD radius-arm platform with the same ProLock geometry correction. The KIT385-POL polished aluminum kit delivers exceptional performance for daily drivers, tow rigs, and trail builds — lighter weight, natural flex memory, reduced unsprung mass. The KIT385-STL DOM steel kit delivers maximum pure resistance to gouging and permanent bending from sharp rock contact — the correct choice for dedicated rock crawlers, commercial job site haulers, and any application where the linkage will take direct violent hits against hard surfaces. Text (469) 407-7538 with your intended use and we'll confirm which is right.

Q: Does this fit my Ram 3500 dually?

Yes — SRW and DRW both confirmed across the full 2014–2026 radius-arm platform range. Confirm 4WD before ordering.

Q: Will this fix death wobble on my Ram 2500 or Ram 3500 Cummins?

Yes — provided ball joints, track bar bushings, and steering box are in serviceable condition. The ProLock mechanical keyway system and thick-walled DOM construction eliminate the factory compliance that permits the front-end tracking to oscillate out of control. For a complete fix, confirm the rest of the front-end components are in good working order before installing and plan for a performance stabilizer upgrade alongside this kit.

Q: How hard is this install and what will I need?

Intermediate to advanced difficulty due to the physical weight of the DOM steel components. Standard hand tools, a torque wrench, and a floor jack are required. A full front-end toe alignment immediately after is mandatory. ProLock jam nuts must be torqued to Apex specification to fully engage the keyway locking mechanism. Budget one garage session for the swap and one same-day alignment appointment.

The Obsidian Take

The KIT385-STL is for one specific Ram HD owner — the one whose truck goes where the linkage will take hits. Rock crawlers who drag the tie rod over boulder shelves. Commercial job site haulers pulling extreme-tonnage fifth-wheel loads on rough terrain. Heavy-duty working trucks that earn every mile in conditions where aluminum's flex memory is an asset but direct rock-gouge impact resistance is the deciding factor. The thick-walled DOM construction with ProLock keyway jam nuts physically locks alignment against any terrain — the front end cannot walk, flex, or oscillate out of spec. At 63.4 lbs it is the heaviest assembly in the Apex Ram HD lineup, and that weight is the DOM steel doing its job. SRW and DRW both confirmed across the full 2014–2026 range.

This kit is not for daily drivers, highway tow rigs, or trail builds that don't involve direct linkage-to-rock contact — the KIT385-POL polished aluminum kit delivers better ride dynamics and reduced unsprung weight for those applications. It is not for 2013 or earlier Ram HD owners — the previous generation crossover steering requires the KIT380 series. It is not for 2WD Ram HD owners. And at 63.4 lbs, factory shocks are not a sufficient complement — plan for performance-valved front shocks and an upgraded steering stabilizer alongside this kit. Text (469) 407-7538 with your year, lift height, shock setup, and intended use and we'll confirm everything before we ship.

Product information is compiled from manufacturer-provided data. Obsidian Forged Auto Supply is not responsible for manufacturer-driven specification updates, metadata changes, or accuracy discrepancies in the foundational data sheets.

2014–2026 Ram 2500 / Ram 3500 4WD. Gas or Cummins. SRW & DRW. 2–6" lift. Maximum-duty DOM steel. Performance shocks strongly recommended alongside this kit.