In this schematic the "Bush,rear Fork" is used most often.
A sample from the products for the Rear Swing Arm/chain Case include: Chain Set,drive(r, Washer, Pivot, Chain Set,drive(d, Swingarm Sub Assy.
The most reasonably priced component used on the Cb250 1999 (x) Mexico / Mph Rear Swing Arm/chain Case is the Tapping,5x12.