I used this hose for ducting cold air to my brakes. It made a tremendous difference on the racetrack. I didn't experience any brake fade at all with these hoses. They're pretty stiff and may be a little tricky to route. They also are hard to cut super clean, but they were able to withstand 500ºF+ no problem. Definitely a must have for any car going on a racetrack. View more reviews...