2017-2019 Powerstroke 4" Coilover Radius Arm Lift Kit (BDS1520F)
Built to take full advantage of the factory suspension design, these 4" radius arm systems paired with Fox 2.5 Series Remote Reservoir Coilovers correct suspension, steering, and driveline geometry with room for 37" tires. The arms bolt into the factory mounting points and reposition the front axle to correct the caster angle. Only the best quality materials & relevant parts go into BDS Kits; which means less maintenance, less time looking, and less confusion for you. Everything you need to take your new Super Duty to the next level.
Tire & Wheel Combinations:
- 37 x 12.50 w/ 17 x 9 and 4.5" - 5"
- 37 x 12.50 w/ 18 x 9 and 4.5" - 5"
- 37 x 12.50 w/ 20 x 9 and 4.5" - 5"
Notes:
- Diesel Model Only
- If equipped with a 2-piece rear driveshaft, a Carrier Bearing Drop Kit may be required (BDS123402)
- 37 x 12.50 tires may require minor trimming.
- Some models may be factory equipped with a 2-leaf main rear leaf spring pack and others a 3-leaf main. Be sure to order the correct option when customizing your kit.
- If your truck is equipped with a factory rear sway bar add: 123005
Installation:
- Click Here For Installation Instructions
- Difficulty: 3 (where 1 = easiest and 5 = complicated)
Part Number: BDS1520F

Front Fox 2.5 Remote Reservoir Coilovers
When you want the best in performance and capability, go with FOX. These race-proven FOX 2.5 factory series remote reservoir coilovers up the ante allowing for next-level damper capability and control all neatly packaged. Designed for bolt-on installation, the engineers at BDS and FOX teamed up to offer this race-winning technology into a bolt-on, pre-tuned Coilover designed to perform and provide correct ride height right out of the box. From valving to spring rate, preload, and hose length these FOX coilovers are designed to take all the guesswork out of setting your vehicle up and are designed to be used with BDS lift systems. These coilovers use a large 2.5" body, 3" coil springs, 7/8" hardened carbon steel shaft, high flow piston, JM92 advanced racing shock oil, CNC machined 6061 T6 ends, and external remote reservoir to improve damper capability across any terrain.
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Front Fox 2.5 Series Remote Reservoir Coilovers w/ DSC
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Coilover Mounting Kit
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4" Front Box Kit
This Box Kit includes the following products:
- Pitman Arm
- Driver & Passenger Side Brakeline Bracket
- Front Bump Stop Extension - 4"
- Driver & Passenger Side Sway Bar Drop
- Track Bar Bracket
- Bag Kit
- Track Bar Cam Washer
- 1/8" x 1-1/8" cotter pin
- Zip Ties
- Bolt Pack - Sway Bar Drop Bracket
- Bolt Pack - Bump Stops
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Radius Arm Kit
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Note:
Some F250/350 factory options increase the main leaf pack count from 2 to 3 leafs (this is for top overload options only). Be sure to verify which factory leaf spring configuration your vehicle has and choose the appropriate option below.
https://bds-suspension.com/images-prod/reference/17_f250_r-spring_2leaf.jpg

5" Rear Block Kit w/ 2 Leaf Main
Note:
- Choose this option if your vehicle is factory equipped with a 2-leaf main rear leaf spring pack
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5" Rear Block Kit w/ 3 Leaf Main
Choose this option if your vehicle is factory equipped with a 3-leaf main rear leaf spring pack
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4" Lift Rear Leaf Spring (2x)
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Only select this option if you have added the full leaf spring replacements.

4" Rear Leaf Spring Box Kit
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Important: With the Coilovers & the Mounting kit provided, you have the option of keeping the factory location shocks or upgrading to Fox 2.0.
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Features:
- Standard turn-buckle length adjustment as featured on other BDS truck track bars
- Works with 0-4" of lift using the stock track bar bracket and 4+"-8" with replacement extended track bar bracket
- 1-3/8" solid steel stock with CNC machined threads
- Greaseable, high-durometer polyurethane bushings at the frame end
- Heavy-duty, greaseable replacement ball joint pre-installed at the axle end
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Features:
- Adjustable axle wrap control utilizing dual-stage resistance springs
- Full-floating traction bar design will not bind throughout the full range of wheel travel and/or hinder suspension articulation.
- Does not adversely affect ride quality when springs - particularly when resistance springs are adjusted to still be active.
- Spring preload can be adjusted on the vehicle without disassembling the traction bar
- Adjustments can be made for optimum performance over a wide range of uses/terrain. (On-Road - Unloaded, Towing/Hauling, Off-Road, Competition pulling)
- Traction bar ends are greaseable and rebuildable
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Universal Recoil Traction Bar
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Required if you have added the Traction Bar.
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RECOIL Traction Bar Mounting Kit (3.5"- 4" Axle Diameter)
Mounting brackets are bolt-on, only requiring minor drilling for frame mount installation.
Note:
- Does not fit regular cab models
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The kit comes with multiple shim plates for full adjustability from 1/8" to 1-1/2" of drop. Includes necessary hardware.
Note:
- For all 3"+ Lift Kits.
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Carrier Bearing Drop Spacer
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If your truck is equipped with a rear sway bar, these are recommended.
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IMPORTANT: Will ONLY fit trucks with a 4 bolt flange style rear driveshaft mount on the axle.
When lifting the 2011-2020 model Ford Super Duty 6" or more it may be necessary to extend the rear driveshaft to ensure adequate spline engagement at full droop of the suspension. While one option is to have a custom extended length driveshaft built, BDS Suspension is now offering a more affordable solution with their new high strength rear driveshaft spacer. Built from T6061 billet aluminum and CNC machined for a precision fit, this rear driveshaft spacer mounts between the driveshaft and rear axle providing the necessary driveshaft spline engagement. Longer hardware and thread locker are also supplied complete the simple install.
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The following kit ID's 1567H, 1567F, 1551H, 1551F - If installed on a truck with a top mount overload spring, and the overload spacer block is taller than 1-1/8" then these U-Bolts (Qty:4) are required.
Note:
- All u-bolts come with high nuts and washers.
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Universal U-Bolt (4x)
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