Overview
The Rubicon Express RE1451 is a 4.5 inch extreme-duty rear leaf spring for a CJ application, sold as a single spring. Rubicon Express designed it for articulation, a smoother ride, extra load capacity and durability when larger tires and lower gears put more torque through the rear axle.
It is a direct fit for a rear position, with a lift height range of 0 to 4.99 inches. It is a CJ application spring, so confirm your vehicle’s year and model before ordering.
Key features
- Military wrap spring eyes
- Diamond cut leaves
- Bolt-on spring clamps
- Antifriction sliders
- Top grade US steel
Leaf spring care and inspection
A leaf spring carries the axle and the body, and its condition shows in ride height and axle position. Sliders and spring clamps wear with use, so check them for play and for worn material at each service. Spring eye bushings are a common wear point, and worn bushings let the spring shift under load.
After a spring change, check the U-bolts or clamp torque, the center bolt and the shackle movement. Look for cracked or broken leaves and for sagging at one corner, which can point to uneven loading or a worn spring pack. Re-check the clamps and alignment once the vehicle has settled.
- Check spring eye bushings for wear
- Inspect the antifriction sliders for play
- Look for cracked or broken leaves
- Check U-bolt clamp tightness after the first drives
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | RE1451 |
| Lift | 4.5 inch |
| Lift height range | 0 to 4.99 inches |
| Position | Rear |
| Spring quantity | Single spring |
| Bushings | Not included |
| Fitment | Direct fit |
| Material | Top grade US steel |
| UPC | 614901438291 |
Vehicle fitment
It is a CJ application spring. Check that the spring position and model years match your vehicle before buying.
Confirm your CJ5 or CJ7 model before ordering, since the spring should only be used on a matching application.
Installation notes
Bushings are not included, so reuse your existing bushings only if they are in good condition, or source new ones for the spring eyes. The spring clamps are bolt-on, and the sliders are an antifriction part, so check them for wear during installation.
What’s included
One leaf spring, sold individually, with bolt-on spring clamps and antifriction sliders as described.
Not included: bushings. Order a matching set for the spring eyes.
