The best filter in the world can't do its job if there are leaks in the seal of the airbox. That's why Twin Air provides a complete line of products to ensure a leak-proof, fool-proof fit. Twin Air's Power Flow kit comes with a rigid, lightweight, billet aluminium cage that provides a tight seal to the airbox and replaces your flimsy plastic stock cage. Includes a Fire-resistant Twin Air Filter. POWERFLOW KIT - 154225C GAS GAS MX MC125 24-25 MC250 24-25 GAS GAS ENDURO EC250 24-25 EC300 24-25 GAS GAS XC EX250 24-25 EX300 24-25 KTM MX 125 SX 23-25 250 SX 23-25 300 SX 23-25 KTM ENDURO 150 EXC TPI 24-25 250 EXC TPI 24-25 300 EXC TPI 24-25 HUSQVARNA MX TC125 23-25 TC150 25- TC250 23-25 TC300 25- HUSQVARNA ENDURO TE 150I 24-25 TE 250I 24-25 TE 300I 24-25 HUSQVARNA XC TX300 TPI 23-25