https://www.sprintfilter.net/automotive/kit/kd1tcr/15
Sprint Filter KD1TCR, created in 2017, is built entirely from an autoclave molded carbon (both the base and the duct). KD1TCR consists of inlet and outlet diameters much larger (100mm/100mm) than the other models of the KD family to provide vehicles, subjected to extreme tuning, for a larger quantity of air. Is the official air intake used by all official Honda Civic Type-R TCR, Alfa Romeo Giulietta TCR in the World and also from another third brand of TCR racing cars.