The proper cooling of your discs and calipers is very important for the life and performance of your brake system. First, there is never enough air cooling the brake system, so full advantage of the rules for your racing series for brake cooling must be taken to the limits. Research the rules for your particular series to see what your limitations are. Keep in mind that better cooling promotes better performance of the brake pads and discs for all manufacturers.

1. Always use the maximum square inches of brake duct opening at the front air dam.
2. Use the maximum size allowable for the brake duct hose.
3. Use fans (if allowed) in a Y from the main duct hose back towards the nose to keep it out of the way of the tire when turning but not inline with the main airflow. Keep the fan running for the entire race to maximize cooling during cautions and pit stops. If a fan is used in line of a duct hose, it will impede the incoming air going to the disc and not let enough air to the disc and caliper.
4. If using a brake cooling duct at the disc, make sure that the air is directed into the hub area and not directly onto the disc face. Directing air to the inside disc face only may cause problems with warping of the disc and shorten disc life. If a double cooling duct is used at the disc and only one hose is attached, make sure to close off the unused opening. The discs have directional vanes that cause the air to be pulled from the inside diameter of the disc to cool the disc from the inside core out, so if possible, direct the air to the hub area where it will do the best cooling of the discs.
5. If no cooling duct is used at the disc, attach the cooling hoses with safety wire as close to the area being cooled as possible but be aware that if it is too close the hose may catch fire.
6. If possible, direct at least one cooling hose to the caliper to help prevent boiling the fluid in the caliper. If only 2 hoses are allowed, run one to the disc and one to the caliper.
7. Good fluid maintenance is also a great help to ensure the best performance of the brake system. Use the highest wet boiling temp. fluid available. Synthetic fluids with silicon ester work best; they are less hygroscopic (meaning that it absorbs less water which lowers the boiling point of the fluid). After each race the brake calipers should be bled and flushed with clean fluid. This does not mean flushing the whole system – just bleed the calipers using a clear hose until clear fluid is coming out and then top off the master cylinder reservoir. If the fluid in the master cylinder reservoir has a brown or black color to it, the whole system should be flushed with new fluid.