Apex Chassis KIT375-BLK ProLock Complete Steering Kit | Black Anodized Aluminum | 2017-2026 Ford F-250/F-350 Super Duty 4WD | P558 & P702 | SKU KIT375-BLK
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Before ordering, verify your vehicle details, current setup, and SKU with OFAS fitment support so your upgrade matches your build.
Shipping & Delivery
Free shipping is available within the lower 48 U.S. states. Large or heavy items may ship by freight, and delivery timing can vary by warehouse, carrier, and product availability.
Fitment, Shipping & Product Support
The Apex Chassis KIT375-BLK is the complete ProLock steering master kit for the 2017–2026 Ford F-250 and F-350 Super Duty 4WD — 2.125" tie rod and 2" drag link in black anodized 7075-T6 aluminum, both in one session with one alignment fee. SAE 1045 CNC-machined forged steel housings, SAE 4140 hot-forged induction heat-treated chromoly ball studs, ProLock™ machined keyway washers, jam nuts with 3 wrench-flat set screws, reversible drag link design with stainless steel taper sleeve, greaseable high-articulation spherical bushing on the passenger side tie rod. Black anodized finish. Excludes wide track. Full front-end alignment required post-install.
Excludes wide track configurations. Fox ATS/TS and BDS adjustable trackbar are not compatible. 2005–2016 P221 owners must order KIT374 series instead.
Component Specifications
| Spec | Detail |
|---|---|
| SKU / Part Number | KIT375-BLK |
| Brand | Apex Chassis |
| Platform | 2017–2026 Ford F-250 / F-350 Super Duty 4WD |
| Generations Covered | P558 (2017–2022) and P702 (2023–2026) |
| Configuration | Complete master kit — tie rod + drag link |
| Individual SKUs | Tie rod: KIT372-BLK · Drag link: KIT373-BLK |
| Tie Rod Rod Material | 2.125" 7075-T6 aluminum |
| Drag Link Rod Material | 2" 7075-T6 aluminum |
| Housings | SAE 1045 solid steel forged — CNC machined |
| Ball Studs | SAE 4140 hot-forged chromoly — induction heat treated, rolled step threads |
| Passenger Side Tie Rod | Greaseable high-articulation spherical bushing |
| Adjustment System | ProLock™ machined keyway washers + jam nuts with 3 wrench-flat set screws |
| Drag Link | Reversible design with straight-bored stabilizer hole and reversible stainless steel taper sleeve |
| Minimum Engagement Mark | Laser-etched on drag link — must remain hidden after adjustment |
| Bearings | Rugged metal-to-metal |
| Boots | CR rubber accordion boots |
| Hardware | Grade 8 / Class 10.9 |
| Lubrication | Pre-threaded Zerk housing, greaseable, pre-greased, gull-winged grease grooves |
| Finish | Black anodized aluminum |
| Lift Range | 2–6" |
| Wide Track | Not compatible |
| Fox ATS / Fox TS Stabilizers | Not compatible |
| BDS Adjustable Trackbar | Not compatible |
| Carli Low Mount Stabilizer | Requires Apex clamp — use Carli-provided clamp from your Carli kit |
| High Mount Stabilizer | Must mount in OE position at taper hole on pitman arm side drag link end |
| Dual Stabilizer Kits | May require bracket modification — tie rod ends are 1/8" larger than OE |
| Alignment Required | Yes — full front-end alignment mandatory post-install |
| Install Difficulty | Intermediate — professional alignment required |
| Warranty | Apex Chassis manufacturer limited warranty — registration required |
| Country of Origin | United States |
| Sold As | Complete kit — tie rod + drag link |
What Is and Is NOT Included
| Item | Included |
|---|---|
| 2.125" black anodized aluminum tie rod (KIT372-BLK) | ✓ |
| 2" black anodized aluminum drag link (KIT373-BLK) | ✓ |
| ProLock washers and jam nuts with set screws | ✓ |
| Reversible stainless steel taper sleeve | ✓ |
| Grade 8 / Class 10.9 hardware | ✓ |
| Installation sheet with torque specs | ✓ |
| Track bar relocation bracket | ✗ NOT included — recommended for lifts exceeding 4" |
| Dropped pitman arm | ✗ NOT included — may be required for lifts exceeding 4" |
| Carli low mount stabilizer clamp | ✗ NOT included — use Carli-provided clamp from your Carli kit |
KIT375 Finish/Material Options
| SKU | Tie Rod | Drag Link | Finish | Best For |
|---|---|---|---|---|
| KIT375-BLK (this listing) | 2.125" 7075-T6 aluminum | 2" 7075-T6 aluminum | Black anodized | Zero-maintenance daily and tow rigs — road salt environments |
| KIT375-POL | 2.125" 7075-T6 aluminum | 2" 7075-T6 aluminum | Raw mirror polished | Show builds — restores with aluminum polish |
| KIT375-STL | 2" DOM SAE 1020 steel | 1.75" DOM SAE 1020 steel | Matte black powdercoat | Rock crawling with direct bar contact — no flex memory |
Verified Fitment
| Vehicle | Years | Generation | Status |
|---|---|---|---|
| Ford F-250 Super Duty 4WD | 2017–2026 | P558 / P702 | ✓ |
| Ford F-350 Super Duty 4WD SRW | 2017–2026 | P558 / P702 | ✓ |
| Ford F-350 Super Duty 4WD DRW | 2017–2026 | P558 / P702 | ✓ |
| Ford F-250/F-350 — wide track | Any | Any | ✗ Not compatible |
| Ford F-450/F-550 | Any | Any | ✗ Wide-track commercial chassis — not compatible |
| Ford F-250/F-350 — 2WD | Any | Any | ✗ No solid front axle |
| Ford Super Duty P221 | 2005–2016 | P221 | ✗ Order KIT374 series |
| Ford F-150 | Any | Any | ✗ Different platform |
Critical Compatibility
| Configuration | Notes |
|---|---|
| Wide track Super Duty | Not compatible — confirm standard track before ordering |
| 2005–2016 P221 Super Duty | Does not fit — order KIT374 series |
| Fox ATS / Fox TS stabilizers | Not compatible |
| BDS Adjustable Trackbar | Not compatible |
| Carli low mount stabilizer | Requires Apex clamp — use Carli-provided clamp from your Carli kit |
| High mount stabilizer | Must mount in OE position at taper hole on pitman arm side drag link end |
| Dual stabilizer kits | May require bracket modification — tie rod ends are 1/8" larger than OE |
| Minimum engagement mark visible | Indicates unsafe thread engagement — redistribute sleeve or may require flip kit |
| Lifts exceeding 4" | Track bar relocation bracket strongly recommended; verify pitman arm drop compatibility |
Common Questions
Why buy the complete kit instead of individual components?
Both components in one session means one alignment fee instead of two. The tie rod and drag link operate as a single interdependent system — upgrading one while leaving an OEM bar on the other is a half-finished correction. If you're phasing the work, KIT372-BLK and KIT373-BLK are available individually.
Does this fit my F-350 dually?
Yes. F-350 DRW uses the same front axle knuckle geometry as F-350 SRW — the dual rear wheel configuration is in the rear, not the front steering. Both SRW and DRW F-350 are confirmed fits.
What stabilizers are compatible?
Fox 2.0 in OE position — compatible. Carli low mount using Carli-provided clamp — compatible. Fox ATS and Fox TS — not compatible. High mount stabilizers must mount in OE position at the taper hole on the pitman arm side drag link end.
Why does the drag link have a reversible taper sleeve?
On lifted applications installers frequently flip the drag link at the pitman arm to correct geometry. The straight-bored hole and reversible stainless steel taper sleeve allow the stabilizer to mount cleanly from either face of the drag link end without fabrication.
What is the minimum engagement mark?
A laser-etched reference line on the drag link threads. After adjustment this mark must remain hidden. If visible, thread engagement is unsafe — redistribute the sleeve or the truck may need a flip kit.
The Obsidian Take
The KIT375-BLK is for the 2017–2026 P558/P702 Super Duty owner — SRW or DRW — running a 2–6" lift who wants the complete front steering fix in one session. 2.125" tie rod, 2" drag link, both in black anodized 7075-T6 aluminum, ProLock adjustment, reversible taper sleeve, one alignment fee.
Black anodized is the zero-maintenance call for a working Super Duty that sees road salt year-round. For mirror finish, KIT375-POL is the same kit. For maximum rigidity under direct rock contact, KIT375-STL in DOM steel is the call.
Two hard checks before ordering: wide track trucks are excluded, and 2005–2016 P221 owners need the KIT374 series — this kit will not fit your steering box geometry.
Non-Returnable Notice: Steering components that have been installed are non-returnable. Confirm wide track status, stabilizer type, and model year before ordering.
Specifications sourced from Apex Chassis manufacturer documentation and authorized distributor data. Obsidian Forged Auto Supply is an authorized Apex Chassis dealer. Product registration required for warranty coverage. Manufacturer specifications are subject to change without notice.
⚠️ California Proposition 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm. For more information visit P65Warnings.ca.gov.