Overview
The Rubicon Express RE1454 is an Extreme-Duty leaf spring for a 4.5 inch lift, sold individually. Confirm whether it is the front or rear spring before ordering.
Rubicon Express designed the Extreme-Duty spring for maximum articulation, a smooth ride, more load capacity for heavy gear, and durability under the extra torque from larger tires and lower gears. The brand lists military wrap spring eyes, diamond cut leaves, bolt on spring clamps, antifriction sliders and top grade US steel, and it cites its quality control.
Key features
- 4.5 inch lift
- Military wrap spring eyes
- Diamond cut leaves
- Bolt on spring clamps
- Antifriction sliders
- Top grade US steel
Lift springs and driveline
Leaf springs control axle location and carry load, so a lift spring changes how the axle sits under the vehicle. Taller springs can shift pinion angle and the driveline, which may cause vibration if the angle is not checked. Measure the angles after the new springs settle, and adjust with shims or a correction kit when needed.
Extreme-duty springs are often fitted with heavier-duty shock absorbers and brake lines that are long enough to reach the new position. Replace worn bushings and shackle parts at the same time so the new spring sits square. After the first few drives, retighten the U-bolts and recheck the spring clamps. Keep a torque wrench handy for the first service interval.
- Measure driveline angles after the job
- Check brake lines for length at full droop
- Replace worn shackle hardware together
- Recheck U-bolt torque after the first drives
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | RE1454 |
| UPC | 614901438307 |
| Lift | 4.5 inch |
| Lift height range | 0 to 4.99 inch |
| Position | Rear in the product table, front in the title |
| Spring quantity | Single spring |
| Sold as | Individually |
| Bushings | Not included |
| Eyes | Military wrap |
Vehicle fitment
This spring is sized for a 4.5 inch lift and is titled for the Jeep Wrangler YJ. Confirm the front or rear position for your axle before ordering.
Verify the spring position and lift height against your own vehicle’s year, model and trim before buying.
Installation notes
Leaf springs are sold individually, so order one for each side of the axle. Bushings are not included, so they need to be bought separately. Lift springs change suspension geometry, so get an alignment after installation and check the driveline angles.
What’s included
One leaf spring, sold individually.
Not included: bushings.
