Mustardxf 29 Posted April 8, 2016 hey guys doing a rear brake setup on my xf with a el diff and I need to know, what size the tube is?and what parts I will need?I want to run a flexible line from the existing hardline on the body of the xf to the diffinto a t piece at the diff hard line to each side of the diff with flexible hose from the hardline to the callipers If some one can help with what fittings and parts I will need that will be greatly appreciated Share this post Link to post Share on other sites