TWINAIR Powerflow KitHONDACRF250 25-26CRF450 25-26The 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 * Includes Air filter* Aluminium Cage* Universal Bolt 30mmPowerflow filterrek.SKU: 150234C