TWIN AIR Air Filter - Honda 150101 Turn Out 2-into-1 Exhaust System Graves Motorsports Yamaha R1 Top

Graves Motorsports Yamaha R1 Top Velocity Stacks for the 2009-2014 models

Everlast packing materials

The wire screen inside a 4-stroke's air filter cage is non-conducive to producing horsepower In the good ol' days

PM billet aluminum radius rods add strength and provide for full adjustment

Benefits to this in-house design and production include the ability to quickly adapt and improve the product designs on a regular basis

TWIN AIR Air Filter - Honda 150101 Turn Out 2-into-1 Exhaust System Graves Motorsports Yamaha R1 TopDual 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