TWIN AIR POWERFLOW KIT YAMAHA YZ-F, WR-F (1998-2013)

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 aluminum cage that replaces your flimsy, plastic stock cage and, when needed, a billet-aluminum flange that bolts tight to your airbox.

PowerFlow Kits are custom-designed to each unique application for superior airflow, improved sealing surface, removal of the restrictive backfire screen, and ease of service.

All Kits include a BIO Factory Pre-Oiled Air Filter. Replacements are available separately.

For Yamaha YZ 250 F (2001-2013), YZ 400 F (1998-1999), YZ 426 F (2000-2002), WR 250 F (2001-2002), WR 400 F (1998-1999), WR 426 (2000-2002).