Replacement Bushing Set for Rock Krawler Pro Flex Control Arm Joints
The RK04838K Bushing Pro Flex Joint pair restores worn Pro Flex Joints found in Rock Krawler long arm, mid arm, and short arm suspension systems built prior to early 2018. This pair replaces the bushings at the frame mount connection on X Factor arms and at the axle connection on Adventure Series lower arms, returning smooth articulation and eliminating play.
Key Features
- Direct replacement bushing for Pro Flex Joint housings
- Restores factory feel and reduces squeaking or play in worn joints
- Fits X Factor long arm, mid arm, and short arm configurations through early 2018
- Also used at the axle connection on previous generation Adventure Series lower arms
- Secured in place with a silver retaining ring for a clean finish
Specifications
| Detail | Value |
|---|---|
| MPN | RK04838K |
| Brand | Rock Krawler |
| Quantity | Pair (2 bushings) |
| Application | Pro Flex Joint, X Factor and Adventure Series lower arms (pre 2018) |
| Retention | Silver retaining ring |
| Warranty | 2 Year Limited Warranty |
What’s Included
- (2) Pro Flex Bushings
- (2) Joint Set Screws
About Rock Krawler
Rock Krawler Suspension has engineered off road suspension systems and components for Jeep platforms for decades. Every bushing and joint is designed and tested to hold up to serious trail use while remaining fully serviceable over the life of the vehicle.
Related Parts
- Rock Krawler 07-18 Jeep Wrangler JK/JKU High Clearance Adj. Rear Lower Control Arms
- Rock Krawler 2018+ Jeep Wrangler JL 2DR / JLU 4DR X Series Rear Lower Control Arms
- Rock Krawler 07-18 Jeep Wrangler JK/JKU JK Adventure Series Rear Upper Control Arms
FAQ
What is the RK04838K?
This is a replacement bushing pair for Rock Krawler Pro Flex Joints used in X Factor and Adventure Series control arms built prior to early 2018.
Where are these bushings used on the arm?
They are used at the frame mount joint on X Factor arms and at the axle connection joint on previous generation Adventure Series lower arms.
How do I know if my bushings need replacement?
Noticeable play, clunking, or squeaking in the control arm joint under articulation are common signs that the bushings are worn and due for replacement.
Does this kit include the retaining ring?
The kit includes the bushings and set screws. The silver retaining ring that holds the bushing in place should be inspected and reused if still in good condition.
Will this fit my 2019 or newer Jeep control arms?
This bushing is designed for Pro Flex Joints used prior to early 2018. Call Rock Krawler to verify fitment for your specific arm before ordering.
What tools do I need to install this bushing?
Basic hand tools along with the appropriate Rock Krawler joint tool are recommended to press the bushing and set the retaining hardware correctly.
What is the warranty on this bushing?
Rock Krawler backs this bushing with a 2 Year Limited Warranty.
Can I install this bushing myself at home?
Yes. With basic hand tools and a way to support the arm, most owners can complete the bushing replacement in a home garage.
Installation
- Remove the control arm from the vehicle or support it securely for access to the joint
- Remove the retaining ring and press out the worn Pro Flex bushing
- Clean the joint housing thoroughly and inspect for wear or damage
- Apply a light coat of grease to the new bushing before installation
- Press the new bushing into the housing until fully seated
- Reinstall the retaining ring, making sure it seats fully in its groove
- Install the new set screws and torque to the manufacturer specification
- Reinstall the control arm and check for smooth articulation with no play
