Rough Country · Authorized Dealer
3 Inch Coilover Conversion Upgrade Kit | Diesel | Ford F-250/f-350 Super Duty (05-22)
$1,799.95
Price does not include installation.
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$1,799.95
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🛠️ Install available in Marietta, GA
Installed and serviced at Road Runner Wheels & Tires — 1585 Roswell Rd, Marietta, GA 30062. Call (678) 400-6467 to schedule.
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Built for diesel Super Duty owners who demand superior ride quality and adjustability, this 3" Coilover Conversion Kit replaces your factory independent coil-shock setup with a high-capacity Vertex coilover system. You'll gain ride height adjustability, increased damping control, and the ability to run 33"–34" tires while preserving driveline geometry.
Installed and serviced at Road Runner Wheels & Tires. Most lift kits go in the same day. Call (678) 400-6467 to schedule.
What's included
- 3" Kit Box | Coilover Conversion | Ford Super Duty (05–23) — Complete coilover conversion assembly with fabricated 1/4-inch steel mounts and top-mounted reservoir bracket.
- Vertex 2.5 Adj FR Lh 2.5IN-4IN Diesel | Ford F250/F350 4WD (05–22) — Driver-side 2.5-inch piston, nitrogen-charged, 8-stage adjustable monotube coilover with 56% greater fluid capacity than standard reservoir shocks.
- Vertex 2.5 Adj FR Rh 2.5IN-4IN Diesel | Ford F250/F350 4WD (05–22) — Passenger-side 2.5-inch piston, nitrogen-charged, 8-stage adjustable monotube coilover with external reservoir for enhanced damping sensitivity.
- Secondary monotube shock — V2 monotube shock paired with each kit to provide optimal damping control and even more suspension performance.
Important notes
- Installation requires cutting and drilling — plan 6–8 hours for professional completion.
- This kit ONLY fits models equipped with the 3" Rough Country lift kit already installed.
- Does NOT fit diesel models without prior Rough Country 3" lift installation.
Why customers pick this at Road Runner
- Professionally installed by technicians who perform these conversions every week — no guesswork.
- Alignment performed in-house as part of every suspension install to preserve corrected caster and geometry.
- Backed by Rough Country's Limited Lifetime Replacement Warranty — structural and workmanship defects covered from purchase date forward.
- Vertex coilovers deliver 56% greater fluid capacity than average shocks, translating to superior damping control and ride quality.
- 8-stage adjustability lets you fine-tune suspension behavior for your driving style and terrain.
Ready to build it? Call (678) 400-6467. Hablamos Español.
| Qty | Part | Part # |
|---|---|---|
| 1 | 3" Kit Box | Coilover Conversion | Ford Super Duty (05-23) | 50221991 |
| 1 | Vertex 2.5 Adj FR Lh 2.5IN-4IN Diesel | Ford F250/F350 4WD (05-22) | 685054L |
| 1 | Vertex 2.5 Adj FR Rh 2.5IN-4IN Diesel | Ford F250/F350 4WD (05-22) | 685054R |
Features
- Provides ride height adjustability.
- Incredible ride quality & performance.
- Coilover conversion increases damping capability.
- Includes secondary front monotube shock.
- Secondary shock for even more suspension damping.
- ┬╝ΓÇ¥ fabricated coil over mounts.
- Top mounted reservoir bracket.
- Can be paired with V2 or Vertex rear shock for 4 corner improved damping control.
| Years | Make | Model | Drive |
|---|---|---|---|
| 2005-2010 | Ford | F-250 Super Duty Harley-Davidson Edition | 4WD |
| 2005-2022 | Ford | F-250 Super Duty King Ranch | 4WD |
| 2005-2022 | Ford | F-250 Super Duty Lariat | 4WD |
| 2005-2022 | Ford | F-250 Super Duty XL | 4WD |
| 2005-2022 | Ford | F-250 Super Duty XLT | 4WD |
| 2008-2009 | Ford | F-250 Super Duty FX4 | 4WD |
| 2009-2010 | Ford | F-250 Super Duty Cabela's | 4WD |
| 2013-2022 | Ford | F-250 Super Duty Platinum | 4WD |
| 2018-2022 | Ford | F-250 Super Duty Limited | 4WD |
| 2005-2010 | Ford | F-350 Super Duty Harley-Davidson Edition | 4WD |
| 2005-2022 | Ford | F-350 Super Duty King Ranch | 4WD |
| 2005-2022 | Ford | F-350 Super Duty Lariat | 4WD |
| 2005-2022 | Ford | F-350 Super Duty XL | 4WD |
| 2005-2022 | Ford | F-350 Super Duty XLT | 4WD |
| 2008-2009 | Ford | F-350 Super Duty FX4 | 4WD |
| 2009-2010 | Ford | F-350 Super Duty Cabela's | 4WD |
| 2013-2022 | Ford | F-350 Super Duty Platinum | 4WD |
| 2018-2022 | Ford | F-350 Super Duty Limited | 4WD |
- Tire size: 33″ to 34″ tall
- Lift height: 3″
Requires cutting and drilling for installation. ONLY fits models equipped with 3" Rough Country lift kit Installed. Does NOT fit diesel models.
Rough Country Lifetime Replacement Warranty covers all structural components against defects in materials and workmanship for the original purchaser's lifetime ownership of the vehicle.
3-Year Finish Warranty on all painted and powder-coated surfaces.
3-Year Shock Warranty on N3, M1, and Vertex shocks against leakage and structural failure.
Warranty service is handled by Rough Country directly — call (678) 400-6467 if you need help opening a warranty claim and we'll walk you through it.
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