YZF250 24-25 YZF450 23-25 XXF450 24-25 Twin Air Powerflow Kit . 
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.
FANTIC
XXF450 24-
YAMAHA
YZ250F 23-YZ450F 23-24YZ450FX 24-WR450F 24-