PREMIUM REPLACEMENT PARTWe strongly suggest comparing the posted picture to your faulty unit!
REAR SPROCKETFEATURES:
Rear Sprocket 45 Teeth / Material: SteelFITS ONYAMAHA STREET BIKE
R1 YZF-R1 2004-2005
R1 YZF-R1 2006-2008
R1 YZF-R1 SP 2006