O-ring Ø21x16x2.7mm -BGM ORIGINAL, 1st oversize- used for kickstart shaft Vespa V50, PV125, ET3, PK, PX, T5 125cc, Cosa, Rally, Sprint, TS, GT, GTR, Super, GS160/GS4, SS180, GL150, VNA, VNB, VBA, VBB, clutch operating lever GS160/GS4, SS180