DR - Olympia 102cc cylinder kit (big bore kit) (barrel kit) for the 50cc Vespa motors, these increase the capacity to 102.2cc and have a 55mm bore with 6 transfer ports, the kit will fit all 50cc motors with the standard 43mm stroke crankshaft and re-uses the 50cc cylinder cowling. In the kit you will find the Cylinder, cylinder head, Piston kit (with rings pin and circlips) and top end gaskets. Fitment PIAGGIO APE 50cc VESPA 50 VESPA 50 - PK50FL2 - PK50HP2 VESPA 50 - PK50S VESPA 50 - PK50XL VESPA 50 N VESPA 50 SPECIAL VESPA 50 SS