Maybe one of these similar products would be of interest:-

K&N Engine Air Filter: High Performance, Powersport Air Filter: Fits 1991-1999 YAMAHA (YZ125, YZ250, YZ250X, RMZ250, RMZ450, YZ250F, YZ250X 2T, YZ250F, YZ450F, and other select models) YA-2506XD

K&N Engine Air Filter: High Performance, Powersport Air Filter: Fits 1975-1978 HARLEY DAVIDSON (FLH Electra Glide, FLH Electra Glide Classic, FLHS Sport Glide, XLCH1000 Sportster, XLH1000) HD-2075

K&N Engine Air Filter: High Performance, Powersport Air Filter: Fits 2014-2017 HARLEY DAVIDSON (Softail Slim, Heritage, Softail Classic, Fat Boy, Deluxe, Breakout, and other select models) HD-1614

K&N Engine Air Filter: High Performance, Powersport Air Filter: Fits 1999-2015 HARLEY DAVIDSON (Heritage, Softail, Fat Boy, Breakout, Rocker, Fat Bob, Night Train, and other select models) HD-1499

Air Filter FITS Yamaha YBR 125 05-16 YBR 125 Custom 09-16 Replacement Air Filter