Does anyone have experience with the rt off road break booster. I ordered the model for the xj and the break line inputs on the booster are not the same size that are stock with my car. I didn't see anything that said it didn't work with stock break lines. What would be a good solutions

 

Simple. Bend new lines with the correct flares and fittings.

 

Thru the production run, the XJ had at least two different thread types for the master and or valving for brakes. Also folks with the early style of master assemby may "up grade" to a later master, which may have the different threads. the later master and booster assembly gave more braking than the early set up, thus this is a popular swap, and maybe what you are dealing with. Check with the seller if they offer a different fitting kit for different year XJs, they might have that, then maybe you can exchange?
But first confirm which master assembly you have, it may not match what was installed at the factory anymore. You might have the later better master and booster installed!


Sure Braking to You!