Graves motorsports airbox velocity stack kit Yamaha R1 + FZ1 AB012 Quantum-X Helmet Interior Pad — XS/S Combined with Graves’ exclusive flash

Combined with Graves’ exclusive flash tune map this system produces a solid 15+ HP in the midrange and 25+ on the top of the horsepower charts

Hidden Ventilation — Fresh air enters the three forehead channels

billet aluminum flanges and a titanium diamond shaped silencer with a carbon fiber diamond outlet tip

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Graves motorsports airbox velocity stack kit Yamaha R1 + FZ1 AB012 Quantum-X Helmet Interior Pad — XS/S Combined with Graves’ exclusive flashGraves 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