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Cylinder Stud M7x110 mm,
for Vespa 50 S/SR/PK50SS/HP
Cylinder stud bolts should be replaced as part of regular servicing or cylinder replacement. A turn of the screw and threads can be stripped anytime. It does well to change out regularly and better, an extra or two on hand in reserve, don't forget to include them in your order!
OEM Numbers (for the purpose of comparison)