Overview
The Energy Suspension Hyper-Flex System 2.18104G is a black polyurethane bushing kit for the 1959–1975 Jeep CJ5 and the 1955–1958 Willys CJ-5. It includes front and rear spring and shackle bushings, body mounts and tie rod end boots.
Energy Suspension says its Hyper-Flex line uses performance polyurethane bushings and bump stops for control arms, traction bars and leaf springs, and states they last longer than original rubber. The kit concentrates on the spring, shackle, body mount and boot positions.
Key features
- Black polyurethane bushings
- Front and rear spring and shackle bushings
- Body mounts included
- Tie rod end boots included
Before you press bushings
Spring and shackle bushings control how the leaf springs move in their mounts. When they wear, the most common symptoms are clunking over bumps, loose steering feel and a rattle from the rear shackles. Replacing them usually means the springs or shackles come apart, which is a good time to inspect the spring hangers and frame mounts for cracks, rust and elongated holes. Polyurethane transmits more road vibration than rubber, so expect a firmer ride and a little more drivetrain noise on rough trails. Press the bushings in with a press or vise so they seat square.
Body mounts and tie rod end boots are small parts that are often overlooked. A split tie rod boot lets grit into the joint, so replacing it while the steering is apart makes sense. Work on one side at a time so the other side stays available as a reference for how parts sit.
- Inspect spring hangers for cracks before pressing new bushings
- Replace split tie rod end boots during the same job
- Grease bushings only as far as the installation steps direct
Specifications
| Brand | Energy Suspension |
|---|---|
| Part number | 2.18104G |
| UPC | 703639259688 |
| Color | Black |
| Type | Polyurethane |
| Kit includes | Front and rear spring and shackle bushings, body mounts, tie rod end boots |
Vehicle fitment
It is a direct fit for the 1959–1975 Jeep CJ5 (Base and Renegade trims) and the 1955–1958 Jeep Willys CJ-5.
It does not cover other Jeep models or the CJ-7. Confirm fit for your vehicle’s year, model and trim before ordering.
What’s included
The kit includes front and rear spring and shackle bushings, body mounts and tie rod end boots.
Not included: Control arm bushings and bump stops are not part of this kit.
