Parts such as the F-21: Cushion Assy,rear, Bush,cushion Arm, Nut,u,flange,10mm, Arm Assy.,cushion are included in the Xz100 Ape 2002 (2) Japan Hc07-100 F-21 parts fiche.
With six applications this Seal,cushion Arm is the most specified part.
The most expensive part in this assembly is the Cushion Assy,rear.
