Overview
The Rubicon Express RE1210 is a 1.5-inch rear lift block and U-bolt kit built for 2.5-inch wide springs. The blocks add height without increasing spring rates.
The blocks are for rear axles with a spring-over design. The kit includes four U-bolts and nuts, and U-bolt kits come in various diameters and lengths, so match the size to your axle.
Key features
- 1.5-inch lift block
- Built for 2.5-inch wide springs
- Four U-bolts and nuts included
- Adds height without increasing spring rates
- Spring-over rear axle use
Working with spring packs
A block sits between the axle and the spring pack, and the U-bolts clamp the whole assembly together. The clamp load holds the block in place, so the nuts need regular checks, especially in the first few hundred miles of use and after any hard off-road run.
Spring width matters because the block and U-bolt set has to seat evenly across the pack. If the spring is wider or narrower than the block expects, the U-bolts may not sit square. Inspect the spring center bolt and the spring plate for cracks or wear, since these parts carry more movement once the axle is raised.
- Re-torque U-bolt nuts after the first drives
- Check the spring center bolt for wear
- Look for cracks around the spring plate
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | RE1210 |
| UPC | 614901437607 |
| Block height | 1.5 inches |
| Spring width | 2.5 inches |
| Included | 4 U-bolts and nuts |
| Position | Rear axle |
| Fitment | Direct fit |
Vehicle fitment
The kit is a direct fit for rear spring-over axles with 2.5-inch wide springs. No model is named, so confirm fit for your vehicle’s year, model and trim before ordering.
Confirm your vehicle’s year, model and trim before ordering, and check the U-bolt diameter and length against your axle.
