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Limit rear axle compression before lifted-suspension parts make contact
RockJock CE-9807RBSK is built for Rear of 2007-2018 Jeep Wrangler JK two-door and Unlimited four-door models using lifted rear coil springs. Intended for RockJock CE-9132RP 4-inch lift rear coils; verify tire, shock, coil, and chassis clearance. Final compatibility depends on matching every dimension, mounting point, moving component, and clearance in the intended suspension system.
Key Features
- CE-9807RBSK provides a three-inch rear extension
- CNC-machined billet aluminum spacers
- Right- and left-side spacers are interchangeable
- Semi-gloss black finish with zinc-plated hardware
- Designed around RockJock four-inch lift rear coils
Fitment
| Fitment Type | Verified Application | Required Checks |
|---|---|---|
| Dimension and system specific | Rear of 2007-2018 Jeep Wrangler JK two-door and Unlimited four-door models using lifted rear coil springs. Intended for RockJock CE-9132RP 4-inch lift rear coils; verify tire, shock, coil, and chassis clearance. | Confirm exact dimensions, mounting hardware, geometry, loads, articulation, component condition, and full suspension and steering clearance |
Specifications
| Detail | Value |
|---|---|
| Product Type | Bump Stop Kits |
| Manufacturer Part Number | CE-9807RBSK |
| Position | Rear |
| Spacer Height | 3.000 inches |
| Spacer Diameter | 3.500 inches |
| Through-Hole | 0.328 inch for a 5/16-inch bolt |
| Spacer Material | Billet aluminum |
What's Included
- Two CE-9807RBSK three-inch billet rear bump-stop spacers
- Required 5/16-inch bolts, washers, and nyloc nuts
About RockJock
RockJock develops connected Antirock sway bar systems, serviceable Johnny Joints, steering components, and suspension hardware for trail control and articulation. Its replacement and universal components are specified by exact dimensions so builders can preserve safe geometry and serviceability.
Related Parts
- RockJock CE-9132RP JK rear coil springs
- RockJock CE-9807RRK rear coil retainers
- Application-length rear shocks
FAQ
What is the CE-9807RBSK?It is the RockJock bump stop kits described in the Specifications table for the stated dimension-based application.
Which vehicles fit this kit?It fits 2007-2018 Jeep Wrangler JK two-door and Unlimited four-door models.
Which springs is the kit designed around?RockJock intends it for its CE-9132RP four-inch lift rear coil springs.
How tall are the spacers?Each billet spacer provides a three-inch extension.
Are the left and right spacers different?No. Each spacer fits either side.
Should rear coil retainers also be considered?Yes. RockJock recommends considering its CE-9807RRK rear coil spring retainer kit during installation.
Does this guarantee tire clearance?No. Tire, shock, coil, exhaust, and chassis clearance must be checked through full suspension travel.
Is hardware included?Yes. The required 5/16-inch mounting hardware is included.
Installation Instructions
- Verify the package label and manufacturer part number CE-9807RBSK before removing, cutting, or installing components.
- Confirm JK application, rear coil-spring lift, tire size, shock travel, and required extension.
- Support the vehicle and rear axle safely and unload the rear springs.
- Remove existing components and inspect the bump-stop mounting surfaces.
- Install both billet spacers with the supplied 5/16-inch hardware.
- Reassemble the rear suspension and torque every fastener to the applicable specifications.
- Cycle the axle through full compression and droop to verify tire, shock, coil, exhaust, brake-line, and chassis clearance.
- Install retainers when required and reinspect all hardware after initial use.
California Proposition 65 Warning: Cancer and reproductive harm. See www.P65Warnings.ca.gov.
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