TWIN AIR Air Filter - Yamaha 152923 XD-4/VX-Pro3/VX-Pro4 Helmet Liner — XS Content: 60% Cotton / 40%

Content: 60% Cotton / 40% Polyester

CNC-machined for added strength over stock Adds durability and stability to clutch during installation and while shifting gears at high speed

Contains uniform micron openings like the K&N precharger

ZX10R 2004-2012 /

TWIN AIR Air Filter - Yamaha 152923 XD-4/VX-Pro3/VX-Pro4 Helmet Liner — XS Content: 60% Cotton / 40%Dual bonded foam design filters out even the smallest dirt particles, while allowing more airflow than two separate layer filters (flow bench proven)Twin Air filters are slightly smaller than stock to make them easier to change and to increase dead air space around the filter for better performance Flat foam sealing ring securely seats against the airbox, even in the worst riding conditions