Graves motorsports airbox velocity stack kit Yamaha R1 + FZ1 AB012 Frame Inserts Features four 1/2" and four

Features four 1/2" and four 5/16" aluminum centering washers

Offering an increased response through the entire rev range

Inlet cap and inner perforation are made entirely out of titanium

compact and high-temperature-resistant carbon-fiber muffler clamp

Because of the higher output

Graves motorsports airbox velocity stack kit Yamaha R1 + FZ1 AB012 Frame Inserts Features four 1/2" and fourGraves 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