In research several years ago, I came across information that indicated that there is a DOT "whip test" that is part of the DOT certification process. Certain fitting designs do not allow for strain relief at the junction of the fitting to the hose and therefore do not pass. For a race application, the number of cycles that the assembly sees is extremely few compared to the life of a daily street driven car...how many cars hit 100,000 miles at drag strip only use?

As the last post said, you can buy DOT braided fittings and the price is almost the same.

Ken is right, just like you dont run 100% hose for fuel line, you dont want to run all hose for brake lines...although the braided hose expands less than rubber hose with no braid, it expands more than steel lline.....potential sponge for the pedal.

mike in tucson