Graves Motorsports Yamaha YZ450F + YZ250F Supermoto Chain Block
Graves Motorsports Yamaha YZ450F + YZ250F Supermoto Chain Block. Designed to keep the chain from contacting the rear wheel on your 06-07 YZ 450F + YZ 250F, this item is a must have for any supermoto bike. Developed by the Team Graves Yamaha supermoto team this is the same part that was used on our the Graves Championship winning supermoto race bikes. Fitment: Yamaha YZ450F 2006-2007 + Yamaha YZ250F 2006-2007