Replacing Rear Brake Lines

[JoeB98TJ]

Hi all, Replacing my rear wheel cylinders and brake lines back to the tee on the axle. I noticed the right hand side line has what looks like a protective sheathing around it.
What is the purpose of this? Do I need to replace with a similar design? Where is a source for this if so? What about using a regular steel line?
thanks in advance.

 

[Irun]

The outer springlike sheathing is called rock guard. It's there to help keep the brake line from getting easily crushed. For replacement lines I always use copper nickel lines. They bend easily, for forming new lines, and will not rust. Take it for what it's worth, but if you're going to make your own lines, get a good flaring tool. Years ago I switched to Eastwood's tool and I would never go back. Making your own lines really isn't difficult and will save you money down the road! Here's a list of what you'll need to make your own lines.

https://www.amazon.com/dp/B01IRQXJDS/?tag=wranglerorg-20

https://www.amazon.com/dp/B01801G45A/?tag=wranglerorg-20

https://www.eastwood.com/profession...MI2vnMioim5gIVTdyGCh3t0wWDEAQYASABEgKy8PD_BwE

 

[JoeB98TJ]

Irun, Thanks very much for the quick and informative response. I have made my own double flares before but not with as nice a tool as you recommended. Thanks for suggestion also on the brake line material also.

 

[mrblaine]

Irun, Thanks very much for the quick and informative response. I have made my own double flares before but not with as nice a tool as you recommended. Thanks for suggestion also on the brake line material also.

I've used lots of brake line types to make lines. Standard bundy tubing, copper nickel, and annealed stainless. The bundy is just galvanized and tends to rust over time. The copper nickel is very soft and easily damaged. The best for what I do and need a line to do is the annealed stainless. But, only if you have a good flaring tool.

 

[JoeB98TJ]

mrblaine, thanks for the additional insight.