OEM Numbers (for the purpose of comparison) 006422 (PIAGGIO), SF504-1124 (LML). Vespa Px Disc 125 150 200 Front Hub Backplate Circlip 20mm Axle. Cluster Circlip brake inner back plate. VESPA PX 80 E Lusso/ EFL/ Arcobaleno / Elestart 80 V8X1T 2T AC `83-`90.