Restore your Genuine Stella 150 2T engine to factory spec with this Tutti Ricambi Complete Cylinder Kit Assembly (SKU C-4727317). Includes everything needed for a top-end rebuild: cast iron finned cylinder jug with intake and exhaust port openings and four head bolt holes; 57mm aluminum piston with ring grooves and wrist pin bores; piston rings; 15mm hollow wrist pin; and two circlip retaining clips. OEM-spec fitment, ready to drop in.