Yamaha YFZ450 Swing Arm 2006-UPThe Lone Star Racing 2006 UP Yamaha YFZ450 Swing Arm is made from 4130 chromoly for superior strength. It comes with the front needle bearings and we use the factory bearing housing(or LSR) and factory brake plate. It has optional skid plate mounts but will always come with a chain guide mount for stock a banshee style chain guide. Uses stock chain slider. (not included) Only fits 2006 UP model years