The component with the lowest price in the REAR CUSHION schematic is the Washer,10mm.
A sample from the products for the Rear Cushion include: Bush, Cushion, Damper Comp.,rr., Metal,rr.cush.up., Nut, Cushion Lock.
The Z50j Monkey 1985 (f) Germany Rear Cushion consists of twelve pieces with the Damper Comp.,rr. being the most expensive.
