The lowest price component in this Rear Swinging Arm parts-list fiche is the Pin 20x20.
In this schematic the "Bearing(25x33x30)" is used most often.
A sample from the products for the Rear Swinging Arm include: Spacer,rr Swgarm Pivot, Link,rear Torque, Spacer,rr Swgarm Pivot Ctr, Pin 20x20.