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Dual Rate Front Coil Springs for TJ, LJ, and JK Lift Applications
RockJock's CE-9133F front coil springs are the same springs supplied in RockJock's Johnny Joint suspension systems, sold as a pair for TJ, LJ, and JK owners building or refreshing a lift. Lift height varies by platform, from about 2 in. on a TJ, LJ, or JK Unlimited to about 3 in. on a 2-door JK.
Key Features
- Dual rate spring with a combined rate of 70 lbs.
- Spring free length of 20.600 in.
- Gloss black powder coat finish
- Sold as a pair of front coil springs
- Works with RockJock Johnny Joint suspension systems or other manufacturers' lift kits
Fitment
| Year | Make | Model |
|---|---|---|
| 1997-2006 | Jeep | Wrangler (TJ) |
| 2004-2006 | Jeep | Wrangler Unlimited (LJ) |
| 2007-2018 | Jeep | Wrangler (JK) |
| 2007-2018 | Jeep | Wrangler Unlimited (JK) |
Specifications
| Detail | Value |
|---|---|
| Manufacturer part number | CE-9133F |
| Quantity | Pair (2 springs) |
| Spring free length | 20.600 in. |
| Spring rate | Dual rate, combined 70 lbs. |
| Approximate lift, TJ/LJ/4-door JK | 2 in. |
| Approximate lift, 2-door JK | 3 in. |
| Finish | Gloss black powder coat |
What's Included
- 2 front coil springs
About RockJock 4x4
RockJock 4x4, made by Currie Enterprises, engineers Jeep-specific control arms, Johnny Joint rod ends, Antirock sway bar systems, and Currectlync steering components for TJ, LJ, XJ, JK, JL, and JT platforms. RockJock parts are built from forged and DOM steel for off-road durability and are designed to bolt into factory mounting points.
FAQ
How much lift does this spring provide?About 2 in. on a TJ, LJ, or 4-door JK Unlimited, and about 3 in. on a 2-door JK, exact lift varies with vehicle load.
Are these springs sold individually or as a pair?They are sold as a pair, covering both front springs.
Can these springs be used with a different brand of lift kit?Yes, they are designed to work with RockJock Johnny Joint systems as well as other manufacturers' lift kits.
What is the spring rate?A dual rate design with a combined rate of 70 lbs.
Do these springs need shocks replaced at the same time?Longer travel shocks are commonly used with a lift of this height, though that is a separate component from the springs themselves.
What finish is on the spring?Gloss black powder coat.
Will these springs fit an XJ Cherokee?RockJock lists reduced lift figures around 1 in. for XJ, MJ, and ZJ platforms using this same spring.
Is the loaded height the same as the free length?No, the 20.600 in. figure is free length, loaded height varies with vehicle weight and is listed separately by RockJock as approximately 13.750 in.
Installation Instructions
- Support the vehicle and remove the front wheels.
- Safely relieve spring tension and remove the factory front coil springs using a spring compressor as needed.
- Install the RockJock CE-9133F springs into the factory spring perches.
- Reinstall the control arms, shocks, and any other suspension components removed for access.
- Torque all fasteners to specification and check ride height and alignment after installation.
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