Overview
This Rubicon Express 18 inch rear brake line is a stainless steel rear line with an 18-inch length. It has a stainless steel outer casing, a rubber layer, and a kevlar casing around a Teflon inner hose.
It is intended for lifted applications between 4 and 6 inches. It is built to DOT specifications, and mounting brackets come with it where they are needed.
Key features
- 18-inch rear line
- Stainless steel outer casing
- Kevlar casing and Teflon inner hose
- Mounting brackets included where necessary
- DOT built
Routing and clearance
A rear brake line has to handle suspension articulation as well as brake pressure. As the axle moves up and down, the line stretches and flexes, so its length and routing decide whether it stays clear of the frame, springs and tires. Lifted vehicles change those angles, which is why the line length is worth checking against the suspension travel of the rig. Stainless steel casing resists abrasion from rocks and debris better than rubber does.
Brake lines are often replaced together with the flex hoses and brackets around them, since worn rubber at the ends can fail even when the steel run is sound. After installation, bleed the brakes and check the pedal feel. Look for chafing, kinks and rubbing points after the first few drives, and re-route or add protection where the line touches anything.
- Check the line at each bracket for chafing after off-road trips
- Replace worn flex hoses at the same time as the steel line
- Confirm full steering and suspension travel does not stretch the line
Specifications
| Brand | Rubicon Express |
|---|---|
| Part number | Not listed |
| UPC | 614901451238 |
| Length | 18 inches |
| Position | Rear |
| Lift range | 4 to 6 inches |
| Material | Stainless steel |
Vehicle fitment
Compare the 18-inch length with your rear brake line and suspension travel before choosing it. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
Check for clearance at the tires and moving suspension components, and make sure the length allows full travel. Bleed the system once the line is in.
What’s included
One 18-inch rear brake line and any brackets needed for mounting.




