Stock brake lines are made of rubber which flexes under high pressure, especially when exposed to higher temperatures. As these parts age, the rubber will deteriorate and the amount of flex will increase leading to a soft and spongy pedal. Replacing the rubber lines with stainless braided lines will all but eliminate the flex in the system and provide a firmer, more responsive brake pedal. The stainless steel braiding keeps flex to a minimum while protecting the inner fluid passages from getting damaged by road debris. Stainless braided lines will also maintain the same pedal feel over their life as they not degrade over time like rubber parts.