Graves motorsports airbox velocity stack kit Yamaha R1 + FZ1 AB012 Frame Inserts Inlet cap and inner perforation

Inlet cap and inner perforation are made entirely out of titanium

Removable flow-through baffles

Developed around the Graves Motorsports race programs

Because of the higher output

Graves motorsports airbox velocity stack kit Yamaha R1 + FZ1 AB012 Frame Inserts Inlet cap and inner perforationGraves Motorsports Yamaha R1 FZ1 Velocity Stack Kit. The Graves Motorsports YZF R1 and FZ 1 Velocity Stack Kit is specially designed to suit the new fuel injected Yamaha Motor. The kit of 4 injection molded plastic intake stacks mount directly into the stock airbox without modification and is designed to smooth out the power curve, increase horsepower throughout and improve fuel efficiency. Power gains of 4 HP in the mid range and 2 HP at the top end