FVD Brombacherstainless steel brake lines for Porsche are manufactured in europe and are approved for all abs systems. They consist of a ptfe teflon inner liner surrounded by a stainless steel (inox) braided cover. They are also coated in a uv resistant pvc jacket to protect the wire and inner hose from the elements, chemicals and abrasion. This construction ensures minimal expansion inside the hose core and eliminates that "spongy" brake feel that is commonly found in the OEM brake lines. FVD Brombacherhas been tuning Porsche vehicles for over 30 + years now, so rest assured that our lines are a direct bolt on replacement for each Porsche application. Our lines are DOT approved by conforming to the fmvss 1...(choose a part on the right to read more)