Maybe one of these similar products would be of interest:-
K&N Engine Air Filter: High Performance, Premium, Powersport Air Filter: Fits 2018-2019 ROYAL ENFIELD Continental GT650; 2019 ROYAL ENFIELD INT650; 2018-2019 ROYAL ENFIELD Interceptor, RO-6518
DNA High Performance Air filter Compatible for Royal Enfield Continental GT 650 (18-24) PN: R-RE65N18-01