KTM SXF/EXC-F Husqvarna FC/FE Gas Gas MC/MCF 19-22 Twin Air Powerflow Kit. 
KTM MX
250 SX-F 19-22
350 SX-F 19-22
450 SX-F 19-22
KTM ENDURO
250 EXC-F 19-23
350 EXC-F 19-23
450 EXC-F 19-23
KTM XC
250 XC-F 19-22
350 XC-F 19-22
450 XC-F 19-22
HUSQVARNA MX
FC 250 19-22
FC 350 19-22
FC 450 19-22
HUSQVARNA ENDURO
FE 250 19-23
FE 350 19-23
FE 450 19-23
HUSQVARNA XC
FX 350 19-22
FX 450 19-22
GAS GAS MX
MC250F 21-23
MC450F 21-23
GAS GAS ENDURO
EC250F 21-23
EC350F 21-23
EX250F 21-23
EX350F 21-23
EX450F 21-23
The best filter in the world can’t do its job if there are leaks in the seal of the airbox. Twin Air’s PowerFlow Kits ensure a leak-proof, fool-proof fit with a rigid, lightweight, billet-aluminum cage that replaces your flimsy, plastic stock cage, and a billet aluminum flange with a rubber seal that bolts tight to your airbox.