Jeep XJ

My Jeep
Rear Brakeline

XJ Extended Rear Brakeline The RE1515 Extended Brakeline

One commonly overlooked area for most folks trying to scrounge together a budget lift is the brakelines. Once their Jeep is lifted and they take it out four-wheeling it's not uncommon for them to rip a front or rear brakeline. Some companies don't even provide extended lines with their own kits! The RE1515 line shown below was installed during Phase One of my 2" RE Budget Boost install, but is the same line used for their taller lifts as well so I didn't install another one during my 4.5" lift. Front brakelines were installed during the later lift, but not deemed necessary at 2 inches. In fact, if the front brakelines are too long they can cause more trouble than they're worth, allowing the lines to get caught and torn by the tires.

To replace the rear brakeline with the extended 18" line (RE1515) is pretty straighforward. The connector at the top is secured by a compression clip that holds the stainless line to the hardline. On the axle connection, use a brake wrench (not a box wrench) to remove the two hardlines and connect them into the block on the new line. The axle vent tube is connected through the holddown bolt that secures the entire assembly. Since I didn't remove the vent tube I spun it backwards a number of times in order to screw it into the brakeline block.

On the frame-side connection in the lower picture you can see a spring clip (arrow) that must be pulled out to remove the line. Don't lose that as it's all that holds the brakeline to the hardline.

There are two types of junctions commonly used; on the left is a Chrysler 8.25" axle and on the right is a Dana44.
Chrysler 8.25 brake junction
Chrysler 8.25"
Dana44 brake junction
Dana 44

The C8.25" vent pases through a hollow bolt that's used to hold the junction in place while on the D44, there's a separate vent hose. I had to add a small washer on top of the junction to hold it all in place as the bolt head was relatively small compared to the hole.

NOTE: If your Jeep is anything like mine, that lower connector on the axle is pretty well gunked up. Clean the area around it to keep gunk from falling into your axle tubes or clogging the hardlines. As I recall, I used an old toothbrush and some WD40 before wiping it down with a clean rag. The picture below is of the fitting two years and 50,000 miles after installation (and cleaning), it really picks up a lot of gunk in that time...

View from the rear looking up at the brakeline connector
View from the rear looking up at the brakeline connector

Make sure you bleed the brakes when you're done, and enjoy the peace of mind afforded by that longer, more durable brakeline.

e-mail Jim
created: Oct 2, 2003

Modified May 1, 2005