The S-TEC extended brake line kit on a quad is responsible for transmitting hydraulic pressure from the brake master cylinder to the brake calipers. It is an essential component of the quad that helps to provide stopping power while riding. The brake line kit is typically made of braided stainless steel which can withstand the high pressures generated by the hydraulic braking system. These materials are chosen for their strength and durability, which are necessary to withstand the stresses of off-road riding, specially developed for the S-TEC A-arms