If you’re looking to make improvements to your standard brake system, then braided brake lines should be one of your first ports of call when looking at brake system upgrades. In fact they should be one of the first aftermarket bike accessory you consider bolting onto you bike.
Braided lines consist of an inner hose wrapped in stainless steel braiding and coated with PVC which keeps the lines safe from the elements. They have been designed to remedy the performance issues found with stock rubber brake lines by pretty much eliminating the swelling characteristic of rubber hoses.