YZF250 19-23 YZF450 18-22 Twin Air Powerflow Kit .
YZ250F 19-23
YZ450F 18-22
YZ250FX 20-22
YZ450FX 19-22
WR250F 20-22
WR450F 19-22
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.