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Rear Softride Leaf Spring Built for Wrangler YJ Lift Height
The Skyjacker YJ40RS is a rear Softride leaf spring delivering 3.5 to 4 inches of lift for 1987-1995 Jeep Wrangler YJ. It uses Skyjacker's tapered multi-leaf Softride design to spread load evenly, keeping the ride comfortable on the street while supporting the added leverage of larger tires off road. The spring is finished in durable black powder coat to resist corrosion from trail mud and road salt.
Key Features
- 3.5 to 4 inch rear lift height
- Softride tapered multi-leaf design
- Sold individually to match an existing spring or full kit
- Powder coated black finish resists corrosion
- Limited Lifetime Warranty backed by Skyjacker
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 1987-1993 | Jeep | Wrangler | Base |
| 1988-1992 | Jeep | Wrangler | Islander |
| 1987-1990 | Jeep | Wrangler | Laredo |
| 1991-1994 | Jeep | Wrangler | Renegade |
| 1995 | Jeep | Wrangler | Rio Grande |
| 1988 | Jeep | Wrangler | S |
| 1991-1994 | Jeep | Wrangler | S |
| 1988-1995 | Jeep | Wrangler | Sahara |
| 1987-1988 | Jeep | Wrangler | Sport |
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | YJ40RS |
| UPC | 803696167633 |
| Lift Height | 3.5 to 4 inch rear |
| Spring Type | Softride Leaf Spring |
| Quantity | Single spring |
| Warranty | Limited Lifetime Warranty |
What's Included
- One rear Softride leaf spring
- Installation instructions
About Skyjacker
Skyjacker Suspensions has engineered lift kits, shocks, and leaf springs from its West Monroe, Louisiana facility since 1970. The YJ40RS extends Skyjacker's Softride leaf spring technology to the Jeep Wrangler YJ, giving owners a smoother ride at 3.5 to 4 inches of lift.
Related Parts
- Skyjacker 2" 78-96 Bronco Rear Springs Pair (SKYFR51)
- Skyjacker Leaf Spring 1978-1996 Ford Bronco (SKYFR51S)
FAQ
What is the YJ40RS?The YJ40RS is a Skyjacker rear Softride leaf spring providing 3.5 to 4 inches of lift for 1987-1995 Jeep Wrangler YJ.
Is the YJ40RS sold individually or in pairs?The YJ40RS is sold individually, one spring per listing.
Does the YJ40RS include U-bolts?U-bolts are included with the spring for proper installation.
What tire size does the YJ40RS support?Most Wrangler YJ applications support up to a 33 inch tire at this lift height with the correct backspacing.
Does the YJ40RS require cutting or welding?No, the spring bolts in using factory mounting locations.
Will the YJ40RS affect ride quality?Softride leaf springs are tapered to distribute load evenly, keeping on-road ride quality comfortable at this lift height.
What is the warranty on the YJ40RS?Skyjacker backs the YJ40RS with a Limited Lifetime Warranty against manufacturing defects.
Can the YJ40RS be installed at home?Yes, with a floor jack, jack stands, and common hand tools, the YJ40RS can be installed in a home garage.
Install Instructions
- Park the vehicle on level ground, set the parking brake, and block the front tires.
- Raise the rear of the vehicle and support the frame on jack stands.
- Support the rear axle and remove the factory or existing leaf spring and U-bolts.
- Install the new Skyjacker Softride leaf spring in the factory spring perch.
- Secure with new U-bolts and torque to specification.
- Reconnect the shock and any brake line bracket.
- Lower the vehicle and torque all hardware to spec.
- Recheck all hardware after the first 100 miles.
Prop 65 Warning
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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