DNA Honda CBR 500 and CBR 400 Stage 2 kit eliminates the OEM intake snorkel for higher performance and better intake sound. TECHNICAL FEATURES DNA Stage 2 and DNA Stage 1 Air Filter (DNA-R-H5N20-S2) yields a +75.22% greater than stock at 91.39 CFM @1,5" H2O corrected at 25° celsius Fuel injection recalibration is suggested but NOT necessary Drop-In Hassle Free Installation (simply follow the information in the workshop manual) Lifetime Warranty FITS Honda CBR 500R / ABS (2019+) Honda CBR 400R / ABS (2019+) Honda CB 500X / 500F ABS (2019+) Honda CB 400X / ABS (2019+)