PMF HD Long Arm 4-Link Kit for 2017-2022 Ford F-250/350
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Description
Description
Want tighter front-end control, better caster settings, and a more planted feel—without going to a full subframe lift?
The PMF HD Long-Arm 4-Link Kit replaces the factory radius arms with fully adjustable upper and lower links, delivering precise axle placement and caster correction across a wide range of lift heights.
- Fits: 2017, 2018, 2019, 2020, 2021, 2022 Ford Super Duty F-250, F-350, F-450 (4x4)
- Intended use: Daily driving, towing, high-HP street/strip, and off-road builds needing improved front geometry
Why Choose the PMF HD Long-Arm 4-Link?
- Full adjustability: Both upper and lower links are adjustable—dial in caster and wheelbase precisely across 4.5"–12" lift ranges.
- Stronger mounting: Independent frame mount for the lower link ties into the frame and the OEM radius-arm mount—far stronger than bucket-only designs.
- Heavy-duty build: Laser-cut 1/4" steel brackets and 2" OD DOM link bars built to handle real-world abuse.
- Bolt-on design: Installs without a subframe; retain your existing springs/shocks and lift hardware.
What’s Included
- Adjustable Link Bars: (2) lower and (2) upper 2" OD DOM tubes with adjusters/joints
- HD Frame/Axis Brackets: Laser-cut 1/4" mounts, including independent lower-link frame mount
- Hardware: Grade-rated installation hardware and spacers as required
- Instructions: Model-specific guidance for setup and caster/wheelbase adjustment
Choose Your Front Setup
- Long-Arm 4-Link (this kit): Replaces radius arms for better axle control, improved on-center feel, and reduced bind through travel.
- Pair with your lift: Works with coil/coilover lifts in the 4.5"–12" range; aligns geometry for street, tow, and performance use.
Rear Blocks & U-Bolts
- This front-suspension kit does not include rear blocks/U-bolts. Retain your current rear setup or pair with your preferred rear components.
Leaf Pack Type (How to Pick)
- Not applicable to this front-only kit. If you’re refreshing the rear, match block height and U-bolt size to your existing leaf pack (Standard vs. Top-Mounted Overload).
Shock Options (Valved for This Application)
- This kit ships without shocks. It is compatible with your current shocks or with performance upgrades (Bilstein, Fox, King) matched to your lift height.
Important Notes
- Lift range: Designed to work from ~4.5" to 12" of front lift. For lifts over ~12", PMF recommends a subframe-based drop setup.
- Alignment: Professional alignment recommended after install to set caster/toe for best tracking and tire wear.
- Compatibility: Front-axle 4-link conversion replaces OEM radius arms; verify clearance with existing skid plates/aux brackets.
Who This Kit Is For
- Owners seeking precise steering feel and stable on-center tracking
- Tow rigs and high-horsepower builds needing repeatable caster and wheelbase settings
- Enthusiasts who want a bolt-on, heavy-duty long-arm 4-link without switching to a subframe
Questions? We’re Here to Help.
Need help confirming lift compatibility or link setup? Contact FASS Motorsports and we’ll get you dialed:
- Phone: 636-429-7020
- Email: info@fassmotorsports.com
