THIS WOULD OFTEN CAUSE THE SPROCKET TO COME OFF THE SHAFT! I'M HAPPY TO ANSWER ANY QUESTIONS YOU MIGHT HAVE.
The item "GENUINE YAMAHA FZS600 FAZER FRONT SPROCKET NUT AND WASHER KIT" is in sale since Saturday, May 3, 2014. This item is in the category "Vehicle Parts & Accessories\Motorcycle Parts\Other Motorcycle Parts". The seller is "mz-parts-bristol" and is located in Bristol, Avon. This item can be shipped worldwide.