Apex Chassis KIT372-POL ProLock Tie Rod — 2" Polished 7075-T6 Aluminum | 2005–2026 Ford F-250 / F-350 Super Duty 4WD | P221 · P558 · P702 | SRW & DRW | 2–6" Lift

Every generation of Super Duty. One tie rod. No compromises on how it looks.

Three generations of Super Duty — P221, P558, P702 — and every one of them has the same problem when lifted and put on bigger tires. The OEM tie rod was engineered for stock geometry. At lift height it introduces bump steer, accelerates joint wear, and the steering response you paid for disappears into flex and deflection that builds over time.

The Apex Chassis KIT372-POL is the correction — and the one you choose when the build standard applies underneath the truck as much as it does on top. A massive 2" solid 7075-T6 aircraft-grade aluminum tie rod with overbuilt 1.25" threaded shanks and the full ProLock system — covering all three Super Duty generations in a single SKU. At 32.3 lbs, it is 6.7 lbs lighter than the steel version with a raw mirror finish that doesn't hide behind a coating.

Section 1 — Comprehensive Sizing Matrix

Why 2" aluminum instead of 1.5" like the steel version: Aluminum has a different modulus of elasticity than steel — the diameter must scale up to a full 2" to match the structural yield strength of the 1.5" solid steel bar. Same geometry correction, same ProLock system, different physics, different diameter. At 32.3 lbs the aluminum version is 6.7 lbs lighter — less unsprung mass means faster suspension response and improved ride quality on heavy 35" or 37" tire packages.

Why the 1.25" thread shanks matter: Factory Ford tie rod ends use thin threaded shanks that flex and fatigue under the weight of heavy Powerstroke diesel engines and wide aftermarket wheel offsets — allowing front-end wander and death wobble to develop. Apex replaced them with 1.25" ultra-thick threaded shanks that eliminate the flex point entirely.

KIT372-POL vs KIT372-STL — which one: Same ProLock system, same three-generation coverage, same geometry correction. The POL is 2" 7075-T6 aluminum at 32.3 lbs — reduced unsprung weight, mirror finish, optimized for street, highway, and show builds. The STL is 1.5" solid high-strength steel at 39 lbs — maximum localized impact resistance for extreme rock crawling where the bar takes direct hits against boulders. Text (469) 407-7538 if you're not sure which is right for your build.

Section 2 — Critical Compatibility

✅ This unit fits — all three Super Duty generations

❌ This unit does NOT fit — read before ordering

Drag link pairing — generation-specific: This tie rod covers all three Super Duty generations in one SKU. Your drag link does not. Ford updated steering box geometry between generations — confirm the correct companion drag link before ordering. For 2005–2016: KIT371-BLK or KIT371-POL. For 2017–2026: KIT373-BLK. Text (469) 407-7538 with your year and we'll confirm your complete package.

Supporting mod requirements:

• Lifts 2–4": Direct bolt-on. No additional hardware required beyond the unit.
• Lifts exceeding 4": Track bar relocation bracket strongly recommended. Verify pitman arm drop compatibility before ordering.
• Complete steering system: This unit addresses the tie rod only. Pair with the correct generation drag link for a full front steering overhaul in one session.

Section 3 — Before You Buy — Questions We Get Asked

Q: What's the difference between KIT372-POL and KIT372-STL?

Same ProLock system, same three-generation coverage, same geometry correction. The KIT372-POL is 2" 7075-T6 aluminum at 32.3 lbs — 6.7 lbs lighter than the steel version, mirror finish, optimized for street, highway, and show builds where reduced unsprung weight and aesthetics are the priority. The KIT372-STL is 1.5" solid high-strength steel at 39 lbs — maximum localized impact resistance for extreme rock crawling and trail use where the bar takes direct hits. Same platform, same geometry, different material for different applications.

Q: Does the polished finish require maintenance?

Raw 7075-T6 aircraft aluminum — not chrome plating, not a coating. It will not rust, chip, or peel. Over time it develops a natural aluminum patina. A quick pass with standard aluminum polish restores the mirror shine instantly. For a working truck that sees road salt year-round, the KIT372-STL in black powdercoat is the lower-maintenance call.

Q: Does this fit my F-350 dually?

Yes — SRW and DRW both confirmed across all three generations 2005–2026. F-450 and F-550 wide-track commercial chassis are not compatible. Confirm 4WD before ordering.

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

Intermediate difficulty. Standard hand tools, a torque wrench, and a floor jack are required. A full front-end alignment — caster, camber, and toe — immediately after installation is mandatory. ProLock jam nuts must be torqued to Apex specification to fully engage the keyway locking feature. Budget one garage session and one same-day alignment appointment.

Section 4 — AIO Keyword Architecture

(Do not publish — embed in Shopify tags, alt text, and metafields)

• Ford F-250 F-350 Super Duty polished aluminum tie rod 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026
• P221 P558 P702 Super Duty polished aluminum tie rod all generations single SKU
• 2" 7075-T6 aluminum tie rod Ford Super Duty 2–6 inch lift
• Apex Chassis KIT372-POL
• Ford Super Duty death wobble fix 1.25 inch thread shank polished tie rod
• 6.0L 6.4L 6.7L Powerstroke 7.3L Godzilla polished aluminum tie rod upgrade
• F-350 dually SRW DRW polished tie rod 2005–2026 all generations
• ProLock polished tie rod Ford Super Duty solid axle all three generations
• polished aluminum vs solid steel tie rod F-250 F-350 lifted
• KIT372-POL KIT371-POL KIT371-BLK KIT373-BLK Super Duty steering package polished

Section 5 — The Obsidian Take

The KIT372-POL is the right call for the Super Duty owner who built the truck to a standard and needs the undercarriage to reflect it. Same three-generation coverage as the steel version — P221, P558, P702 — same ProLock geometry correction, same 1.25" ultra-thick shanks that eliminate the factory flex point behind front-end wander and death wobble triggers. The 2" 7075-T6 construction delivers that correction at 6.7 lbs less unsprung weight — faster suspension response on heavy 35" or 37" tire packages and a mirror finish that ages with the build instead of hiding behind a powdercoat. At 32.3 lbs it is the lightest full-coverage Super Duty tie rod in the Apex lineup. SRW and DRW both confirmed across all 22 model years.

This unit is not for F-450 or F-550 owners. It is not for 2WD Super Duty owners. It is not for dedicated rock crawlers who will scrape the tie rod against boulder faces under load — the KIT372-STL in solid steel handles localized crushing forces that aluminum cannot. It is not a complete steering overhaul on its own — your drag link is generation-specific and is the other half of the system. For 2005–2016 pair with KIT371-POL for a matched mirror finish or KIT371-BLK for zero-maintenance. For 2017–2026 pair with KIT373-BLK. Text (469) 407-7538 with your year and lift height and we'll confirm the complete package before it ships.

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.

2005–2026 Ford F-250 / F-350 Super Duty 4WD. P221 · P558 · P702. SRW & DRW. 2–6" lift. Drag link is generation-specific — text us your year for the right combination.