
Questions about fitment?
Talk to a TRU specialist
We’ll help you verify fitment before you buy.
Veteran-owned · Austin, Texas · Mon–Fri 9:30a–11:00a & 1:00p–5:30p CT
Important notes before you order
- Leaf springs not designed for excess additional cargo weight, lower ride height may result.
- Check Rear Axle Diameter: The XJ was manufactured with different rear axles. You'll need to identify yours to complete an order. To tell the difference, measure the inner diameter (I.D.) of your rear U-bolts. The Chrysler 8.25 rear axle uses a 3" I.D. U-bolt and the Dana 35 rear axle requires a 2-3/4" I.D. U-bolt.
- Driveline: 1" transfer case drop kit recommended when using stock driveline to maintain the factory driveline angle.
TRU specialist notes
From the Trucks R Us fitment and install team, beyond the manufacturer's information.
- Plan for a professional wheel alignment after installing any lift or leveling kit.
- Going to bigger tires as well? Speedometer recalibration may be needed, and some tire and wheel combinations need trimming. Check the recommended wheels and tires, or ask us before you order.
Specifications
| Brand | Zone Offroad |
|---|---|
| Part number | ZONJ21F |
| UPC / GTIN | 810156369728 |
| Front Lift Height | 3" |
| Front Lift Method | Coil Spring |
| Max Tire Size | 31 x 10.5 |
| Rear Lift Height | 3" |
| Rear Lift Method | Leaf Spring |
| Shocks Included | Yes |
| Install time | 5 hrs |
| Difficulty | Moderate |
What's in the box
| Qty | Part | Description |
|---|---|---|
| — | — | ZONJ21F – Chrysler 8.25 / FOX 2.0 Adventure Series(2) FOX98450965 Fox Adv Shock 25.14 x 15.55 x 2-S50/BP7 |
| 2 | FOX98450980 | Fox Adv Shock 23.65 x 15.06 x 2-BP18/EB1 |
| 2 | ZONJ0308 | Jeep Cherokee (XJ) 3" Leaf Spring |
| 1 | ZONJ1302 | Jeep Cherokee (XJ) Main Box Kit 3" w/Rear Springs - Chrysler 8.25 |
| — | — | ZONJ21N – Chrysler 8.25 / Nitro Series(2) ZON7965 Nitro- 24.70 x 14.80 x 2-3/8 - S1/BP7 |
| 2 | ZON7980 | Nitro- 22.95 x 14.65 x 2 - BP18/EB1 |
| 2 | ZONJ0308 | Jeep Cherokee (XJ) 3" Leaf Spring |
| 1 | ZONJ1302 | Jeep Cherokee (XJ) Main Box Kit 3" w/Rear Springs - Chrysler 8.25 |
| — | — | ZONJ22F – Dana 35 / FOX 2.0 Adventure Series(2) FOX98450965 Fox Adv Shock 25.14 x 15.55 x 2-S50/BP7 |
| 2 | FOX98450980 | Fox Adv Shock 23.65 x 15.06 x 2-BP18/EB1 |
| 2 | ZONJ0308 | Jeep Cherokee (XJ) 3" Leaf Spring |
| 1 | ZONJ1303 | Jeep Cherokee (XJ) Main Box Kit 3" Kit w/Rear Springs - Dana 35 |
| — | — | ZONJ22N – Dana 35 / Nitro Series(2) ZON7965 Nitro- 24.70 x 14.80 x 2-3/8 - S1/BP7 |
| 2 | ZON7980 | Nitro- 22.95 x 14.65 x 2 - BP18/EB1 |
| 2 | ZONJ0308 | Jeep Cherokee (XJ) 3" Leaf Spring |
| 1 | ZONJ1303 | Jeep Cherokee (XJ) Main Box Kit 3" Kit w/Rear Springs - Dana 35 |
Features
- Full length replacement coil springs add additional ride height while maintaining ride quality.
- Heavy-duty replacement rear leaf springs provide lift and great ride quality.
- High-strength, black e-coated U-bolts.
Recommended wheels & tires
- Note: trimming may be required.
- 31 x 10.5 with 15 x 8 and 4 in. Backspace
- 31 x 10.5 with 16 x 8 and 4 in. Backspace
Installation
- Estimated install time5 hrs
- DifficultyModerate
Free install support from the Trucks R Us tech team, for you or your shop.
Overview
Rear Axle Option
This truck was produced with different rear axles. Be sure to measure the diameter of your rear axle before ordering. The easiest way to accurately measure the diameter of your rear axle is to measure the inner diameter of your rear-axle U-bolts; to do so, use a tape to measure the distance between the inside edges of the threaded ends of your u-bolts.
- Chrysler 8.25 Rear Axle (3 Inch Diamater)
- Dana 35 Rear Axle (2.75 Inch Diameter)
Shock Option
Nitro Series
- Nitrogen-charged
- Twin-tube design
- 10-stage velocity-sensitive valving
- Dual-welded ends for increased strength
- Self-lubricating seals
- Black powder coat finish
FOX 2.0 Adventure Series
- 2-inch diameter steel body
- Internal floating piston (IFP) monotube design
- Large 5/8-inch hard chrome plated heat-treated alloy steel shaft
- Race-developed high-flow piston design
- Application-specific valving to maximize performance
- Long-lasting clear anodized finish
Questions
Will this fit my truck?
Select your truck at the top of the page and the fit check will confirm it. If your exact trim is not listed, call 866-235-4715 or live chat and a fitment specialist will check it before you order.
Do you help with installation?
Yes. Our technical team helps you or your shop with installation and troubleshooting after delivery, on top of the manufacturer’s support.
What if the part has a problem?
We work the warranty claim with the manufacturer on your behalf, within the manufacturer’s warranty policy.
Can I return it?
Most items can be returned within 30 days. See our return policy for details.
Do I need an alignment after installing?
Yes. Any lift or leveling kit changes suspension geometry, so get a professional alignment after installation.
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