Savior 40mm Big Bore Cylinder Head Piston Rebuild Kit Ring Pin Clips Assembly for STIHL FS250 FS250R FS200 FS200R FS120 Brush Cutter High quality repair cylinder piston kit Cyliner diameter: 40mm Fit STIHL FS250 FS250R FS200 FS200R FS120 Brush Cutter