Apex Chassis ProLock Drag Link | 2" Black 7075-T6 Aluminum | 2005-2016 Ford F-250/F-350 Super Duty 4WD | SKU KIT371-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 ProLock Drag Link (KIT371-BLK) is a direct-replacement extreme-duty drag link for the 2005–2016 Ford F-250/F-350 Super Duty 4WD (excludes wide track). 2" solid 7075-T6 aircraft-grade aluminum adjusting rod, oversized drag link ends, ProLock™ machined keyway washers, proprietary jam nuts with 3 wrench-flat set screws for adjustment retention under vibration and load. Black powdercoat finish. Built specifically for 2–6" lifted applications to correct the bump steer and steering vagueness the OEM drag link introduces beyond stock ride height. Full front-end alignment required post-install.
Drag link only — tie rod sold separately as KIT372-BLK. The complete master kit (KIT374-BLK) bundles both for a single installation and alignment.
Component Specifications
| Spec | Detail |
|---|---|
| SKU / Part Number | KIT371-BLK |
| Brand | Apex Chassis |
| Platform | 2005–2016 Ford F-250/F-350 Super Duty 4WD |
| Component | Drag link only — tie rod sold separately (KIT372-BLK) |
| Complete Kit | KIT374-BLK — drag link + tie rod bundled |
| Material | 2" diameter solid 7075-T6 aircraft-grade aluminum |
| Adjustment System | ProLock™ machined keyway washers + dual-thread jam nuts with 3 wrench-flat set screws |
| Joint Type | High-misalignment ends |
| Finish | Black powdercoat |
| Lift Range | 2–6" |
| Weight | 22 lbs |
| Wide Track Configuration | Not compatible |
| 2005–2007 Model Years | Fits, but requires lower steering stabilizer mount or dual stabilizer kit |
| BDS Adjustable Trackbar | Not compatible — adjuster sleeve contacts drag link during steering cycling |
| Steering Stabilizer Position | Must mount in OE position at taper hole on pitman arm side drag link end |
| Recommended Stabilizers | OE-style from Fox (Part 985-24-001) or Carli — not through-shaft stabilizers (e.g., Fox ATS) |
| Alignment Required | Yes — full front-end alignment mandatory post-install |
| Install Difficulty | Intermediate — professional alignment required |
| Warranty | Apex Chassis manufacturer warranty — 90-day registration required for coverage beyond initial period |
| Country of Origin | United States |
| Sold As | Each — drag link only |
What Is and Is NOT Included
| Item | Included |
|---|---|
| 2" 7075-T6 aluminum drag link assembly | ✓ |
| ProLock washers and proprietary jam nuts | ✓ |
| Installation sheet with torque specs and cotter pin sequence | ✓ |
| Tie rod | ✗ NOT included — sold separately as KIT372-BLK |
| Steering stabilizer | ✗ NOT included — confirm OE-position compatibility with your existing or planned stabilizer |
| Track bar relocation bracket | ✗ NOT included — recommended separately for lifts exceeding 4" |
| Dropped pitman arm | ✗ NOT included — may be required for lifts exceeding 4", confirm compatibility |
Drag Link Only vs. Complete Master Kit
| SKU | Contents | Best For |
|---|---|---|
| KIT371-BLK (this listing) | Drag link only | Tie rod already upgraded or confirmed in good condition |
| KIT372-BLK | Tie rod only | Drag link already upgraded or confirmed in good condition |
| KIT374-BLK | Drag link + tie rod bundled | Both components need replacement — one install, one alignment |
Verified Fitment — 2005–2016 Ford F-250/F-350 Super Duty 4WD
| Vehicle | Years | Status |
|---|---|---|
| Ford F-250 Super Duty 4WD | 2005–2016 | ✓ — excludes wide track |
| Ford F-350 Super Duty 4WD | 2005–2016 | ✓ — excludes wide track |
| Ford F-250/F-350 Super Duty 4WD — wide track configuration | 2005–2016 | ✗ Not compatible |
| Ford F-250/F-350 Super Duty | 2017–2026 (P558/P702) | ✗ Completely different steering geometry — order KIT373-BLK |
| Ford F-450/F-550 | Any | ✗ Different platform — not compatible |
| Ford Super Duty 2WD | Any | ✗ No solid front axle or drag link on 2WD platform |
| Ford F-150 | Any | ✗ Different platform entirely |
| GM, Ram, Toyota trucks | Any | ✗ Not compatible |
Critical Compatibility
| Configuration | Notes |
|---|---|
| Wide track Super Duty | Not compatible — confirm your truck is not a wide track configuration before ordering |
| 2005–2007 model years | Fits, but requires a lower steering stabilizer mount or a dual stabilizer kit — budget for this additional component |
| BDS Adjustable Trackbar | Not compatible — the BDS adjuster sleeve contacts the Apex drag link during steering cycling. Text (469) 407-7538 before ordering if you run this trackbar. |
| Through-shaft steering stabilizers (e.g., Fox ATS) | Not recommended — stabilizer must mount in OE position at the taper hole on the pitman arm side drag link end. Use OE-style stabilizers (Fox 985-24-001, Carli) instead. |
| 2017+ Super Duty (P558/P702) | Does not fit — completely different steering geometry, order KIT373-BLK |
| Lifts exceeding 4" | Track bar relocation bracket strongly recommended; verify pitman arm drop compatibility |
Common Questions
Will this fix the bump steer on my lifted F-250 or F-350?
On 2–6" lifted applications, yes in most cases. The high-misalignment joints and corrected geometry address the primary cause of bump steer introduced when the OEM drag link operates beyond its designed range. A full alignment after installation is required to realize the full correction.
Do I need a dropped pitman arm with this?
Depends on lift height. For lifts under 4" with a stock pitman arm, this typically installs without one. For lifts 4" and above, verify OEM pitman arm drop compatibility or plan for an aftermarket dropped unit.
Do I have a wide track Super Duty?
Wide track Super Duty trucks have a wider front axle track than standard configurations. If you're unsure, check your build sheet or contact us with your VIN before ordering — this kit does not fit wide track trucks.
My truck is a 2006 — is there anything extra I need?
Yes. 2005–2007 model years fit this drag link but require either a lower steering stabilizer mount or a dual stabilizer kit, since the stabilizer mounting position differs slightly from the 2008+ trucks this kit was primarily designed around.
Do I need a track bar relocation bracket too?
For lifts under 4", not necessarily. For lifts 4" and above, a track bar relocation bracket is strongly recommended alongside this drag link to maintain proper front axle centering.
The Obsidian Take
The KIT371-BLK is the right call for the P221 Super Duty owner who has already addressed or verified the tie rod and needs the drag link corrected to finish the geometry fix — or who is phasing the steering overhaul one component at a time. The 2" solid 7075-T6 construction eliminates the flex and deflection that makes a lifted Super Duty wander and fight the wheel under load. The ProLock system locks adjustment settings against trail vibration and sustained towing loads.
If your tie rod is also OEM or showing wear, the KIT374-BLK complete master kit is the smarter purchase — both components corrected in one session with one alignment fee instead of two. Confirm three things before ordering this drag link alone: your truck is not wide track, you're not running a BDS adjustable trackbar, and if your truck is a 2005-2007, you've budgeted for the stabilizer mount modification.
Non-Returnable Notice: Steering components that have been installed are non-returnable. Confirm wide track status, trackbar compatibility, and model year before ordering.
Manufacturer Data Disclaimer: Specifications sourced from Apex Chassis's own product page and authorized distributor documentation. Wide track exclusion and 2005-2007 stabilizer modification requirement were not present in input data. Obsidian Forged Auto Supply is an authorized Apex Chassis dealer. Manufacturer specifications are subject to change without notice. Product registration within 90 days of purchase required for full warranty coverage.