• BDS 4" Radius Arm Lift Systems for 2020 Ford F250/F350 4WD

BDS 4" Radius Arm Suspension Lift Kit for 2020 Ford F250/F350 Super Duty

  • $1,592.91

Built to take full advantage of the factory suspension design, these 4" radius arm systems correct suspension, steering and driveline geometry with room for 37" tires.
At the heart of this system is a pair of heavy duty radius arms built to withstand whatever abuse you can throw at them. Built from 1-3/4" OD -10GA DOM tubing with support gussets, these replacement arms are far superior to the factory stamped steel units. They use a high clearance design for extra ground clearance and are formed inward to allow for additional clearance of oversized tires. They incorporate factory style 3-1/4" rubber bushings to minimize road vibrations and allow for a long, maintenance-free bushing life. The arms bolt into the factory mounting points and reposition the front axle to correct caster angle. The additional 4" of lift comes from a pair of full length diesel of gas specific ProRide coil springs. These paired with your choice of BDS NX2 series gas shocks or the precision tuned FOX 2.0 performance gas shocks offer a smooth ride and improved control over rough terrain. To improve steering angles a forged drop pitman arm is supplied with an integrated drag link flip. Used in combination with the 1/4" thick heavy duty track bar drop bracket will position the front axle and keep the track bar angle in phase with the steering for improved handling. Also included for the front suspension are a pair of sway bar relocation brackets, bump stop extensions, brake line relocation brackets and a NX2 series steering stabilizer with mounting bracket. Out back a 4.5" fabricated block with integrated bump stop wing is used in place of the factory block on the F250 or F250 to level the stance. Longer black e-coated u-bolts and your choice of NX2 or FOX 2.0 shocks round out this 4" radius arm lift system.
Full Length Diesel/Gas Specific Coils for Smooth Ride Pitman Arm/Trackbar Bracket for Steering Correction Heavy Duty Radius Arms to Correct Frontend Caster BDS NX2 or FOX 2.0 Shocks Available with Kit Allows Fitment of 37" Tires

Note: Components displayed in images may change based upon selections.

1. Removal of the factory leaf spring block required.
2. Net rear lift will vary depending on height of factory block, but will result in a level stance.
3. If equipped with a 2-piece rear driveshaft, a Carrier Bearing Drop Kit may be required (BDS123402)
4. Front exhaust modification may be required to clear front drive shaft (Gas Only) Torque wrench capable of 405 ft-lbs required.
5. 37 x 12.50 tires may require minor trimming.

Lift Height
Front (Base Kit): 4" in Coil Springs
Rear (Base Kit): 3" in Block

Tire and Wheel Combinations
37x12.50 with 17x9 and 4.5"-5" backspacing
37x12.50 with 18x9 and 4.5"-5" backspacing
37x12.50 with 20x9 and 4.5"-5" backspacing
*Trimming may be required* 

Make Model Year Range
Ford F250/F350 Super Duty 2020

Difficulty Level (1 easy – 5 complicated): 3
Estimated Installation Time (hours): 4-6

PDF (click here)

Qty Part# Description
(1) 013414 Front Box Kit
(1) 013459 2020 F250/F350 4.5" Rear Block Kit
(1) 033411 Coil Spring Box Kit (Diesel)
(1) 123251 Radius Arm Box Kit
(1) 85431 NX2 Single Stabilizer (BDS Only)
(2) 85700 BDS NX2 Shock Absorber
(2) 85718 BDS NX2 Shock

*Subject to change based upon selections

No Fine Print Warranty
BDS stands behind its products and that’s evident by their No Fine Print Warranty. This no-BS warranty protects the original purchaser against breakage, bending, sagging, or any other usage failure. This “no fine print” lifetime replacement warranty extends to cover all BDS hard parts as well as bushings. Exclusions would be product finish and wearable items such as shock/stabilizer cylinders, tie rod ends and ball joints that would fall under the separate Limited Lifetime Warranty policy. Beginning February 1, 2020 all new kit purchases include the No Fine Print Warranty on bushings.

Limited Lifetime Warranty (for wearable items)
Wearable items include shock/steering stabilizer cylinders, ball joints and tie rod ends. BDS Suspension Co. warrants to the original retail purchaser that its these wearable parts are free from defects in material and workmanship for so long as they own the vehicle. Excluded from this warranty are the finish of the product. Defects in material and workmanship do not include such things as dented cylinders or bent rods caused by obvious side impact, rust or corrosion. A shock absorber is a wear item and over time will experience diminished damping resistance due to normal component wear. This is not a defect in material or workmanship and is therefore not warrantable.