VooDoo Industries VPVBUSAJ9 Sidewinder P.A.I.R. Valve Block-Off Part installation required for fitment of VSEBUSAJ9P on a 1999-2007 GSX1300R Hayabusa Reduces backfire during deceleration Reduces weight of bike Includes: 1 Throttle Body #4 cap, 4 O-rings, 4 block off plates, 8 mounting nuts & 1 air box cap