Ducati Panigale Brake Brake Caliper Cooler Air Duct Description The Caliber Air Duct will cool down your calipers to give you a better brake performance. They are made of high-quality Carbon Fiber. Available in Matt and Glossy Finish. You can also choose between Twill, Plain, and Forged Carbon Weave. Please be notified that OEM Yamaha Carbon is Twill Weave with a Glossy Finish.