Stopping power is determined by brake pads and calipers, but brake lines determine stopping performance. GruppeM brake lines provide racetrack performance on the street by utilizing advanced aircraft quality alloy materials such as carbon steel and cutting-edge manufacturing techniques. The result is the ultimate brake line system for your high-performance vehicle. Specifically designed, developed and precisely crafted for European vehicles. Fittings are available in both, carbon steel and stainless steel. All brake lines handcrafted in Japan.