Description

Softride(R) springs use only American steel and the individual leafs of each spring are shot-peened with hard steel pellets at very high velocities. This shot-peening compresses the surface of the steel thereby increasing the tensile strength of the spring. Without this shot-peening procedure, the maximum wheel travel and ride quality could not be achieved without sacrificing the life of the spring. Softride(R) springs use bolt style spring clips, eliminating friction. Other spring designs use the c in. style bend clips which bend tightly over the spring leafs causing binding and friction. Skyjacker(R) Softride(R) springs taper over the entire length of the leaf creating more flex at the leaf ends. This tapering distributes loads more evenly over a greater area and reduces the tendency for one leaf to dig into the leaf above it.

Product Overview

Softride(R) springs use only American steel and the individual leafs of each spring are shot-peened with hard steel pellets at very high velocities. This shot-peening compresses the surface of the steel thereby increasing the tensile strength of the spring. Without this shot-peening procedure, the maximum wheel travel and ride quality could not be achieved without sacrificing the life of the spring. Softride(R) springs use bolt style spring clips, eliminating friction. Other spring designs use the c in. style bend clips which bend tightly over the spring leafs causing binding and friction. Skyjacker(R) Softride(R) springs taper over the entire length of the leaf creating more flex at the leaf ends. This tapering distributes loads more evenly over a greater area and reduces the tendency for one leaf to dig into the leaf above it.

Features and Benefits

• Constructed As Progressive Multileaf Packs
• Load Capacity Will Be Equal or Greater Than OE
• Made With American Steel
• Limited Lifetime Warranty

Product Details

Description:	4IN. CJ SPORT; REAR SPRING
Lift/Drop Height:	4 in.
Part Number:	skyJ40RSB
WARNING CA Proposition 65 Message:	California Residents- WARNING: Cancer and-or other Reproductive Harm. (For more information go to www.p65warnings.ca.gov)
WARNING CA Proposition 65:	Yes

Kit Options

This item is available as a full kit.
Select a kit option in the following table if you are looking for this item in a bundle form with all associated components.

Kit option/s:

Thumb	SKU	Kit Title
	skyJ41BKB	Skyjacker 4" KIT,76-86 CJ W/4 BLK MAX (2x skyJ40RSB, 2x skyJ40FSB, 1x skyJ41BB)
	skyJ41BKH	Skyjacker Suspensions - Suspension Leveling & Lift Kits for 1976-1983 CJ5, 1976-1986 CJ7, 1981-1985 SCRAMBLER J41BKH 1976 1986 Jeep CJ 4WD 4" Sport Series System

Data: v4.2 - Upd: 2026-09-30 14:14:27

Features

Specifications

Product Attributes - Brand

Skyjacker Suspensions

Product Attributes - Manufacturer's Part Number

J40RSB

Product Attributes - Part Type

Leaf Springs

Product Attributes - Product Line

Skyjacker Softride Lift Leaf Springs

Product Attributes - UPC

803696212708

Product Attributes - Ride Height

Lifted

Product Attributes - Ride Height Note

Additional ride height information may be available for your vehicle, please refer to the app tab.

Product Attributes - Spring Positioning

Rear

Product Attributes - Rear Spring Raised Amount Range (in.)

4.00 in.

Product Attributes - Progressive Rate Spring

Yes

Product Attributes - Bushings Included

Yes

Product Attributes - Bushing Material

Rubber

Product Attributes - Bushing Color

Black

Product Attributes - Spring Finish

Black

Product Attributes - Quantity

Sold individually.

Compatibility