BDS Suspension 1520H 4" Radius Arm Suspension Lift Kit

BDS Suspension 1520H 4
2018 Ford Superduty 4" lift - by ,2018-08-18 09:00:00
5/ 5stars
Awesome is all I can say !!! Took me a day to install by myself. I elected to NOT use rear blocks and kept it stock at the rear and OMG what a stance this beast has. The Fox shock set up is awesome as well. Great product and would recommend to EVERYONE.Thank you DaltonWinter Garden FL
1628.84In stock
100% of 100

2017-2019 Ford F-250/F-350 Super Duty 4WD Diesel

Regular Price $1,714.57
Special Price $1,628.84
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Product Details

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. BDS Suspension uses a high clearance design for extra ground clearance and are formed inward to allow for additional clearance of oversized tires. BDS Suspension incorporates 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 ProRide coil springs. These springs are available for diesel or gas engine specific spring rates for optimal performance and a true 4" of lift. These paired with your choice of BDS NX2 series gas shocks or the precision tuned FOX 2.0 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 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 kit.

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2017-20194WDFordF-250 Super Duty Diesel
2017-20194WDFordF-350 Super Duty Diesel


(1)013414Front Box Kit
(1)0135175" Rear Block Kit - 2 Leaf Main
(1)033411Coil Spring Box Kit (Diesel)
(1)123251Radius Arm Box Kit
(1)85431NX2 Single Stabilizer (BDS Only)

Important Notes

Tire & Wheel Combinations

  • 37 x 12.50 w/17 x 9 and 4.5" - 5" back spacing
  • 37 x 12.50 w/18 x 9 and 4.5" - 5" back spacing
  • 37 x 12.50 w/20 x 9 and 4.5" - 5" back spacing

*Trimming may be required*

Est. Installation: 4-6 hours
Difficulty Level (easy 1 - 5 complicated): 3

  • 1. Removal of the factory leaf spring block required. Net rear lift will vary depending on height of factory block, but will result in a level stance.
  • 2. Front exhaust modification may be required to clear front drive shaft (Gas Only)
  • 3. If equipped with a 2-piece rear driveshaft, a Carrier Bearing Drop Kit may be required (BDS123402)
  • 4. 37 x 12.50 tires may require minor trimming.
  • 5. 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.
  • 6. If your truck is equipped with a factory rear sway bar add: 123005