Crankshaft complete for Piaggio Ciao/SI, High quality crankshaft final checked and fine calibrated (aligned) in Sweden.

High quality crankshaft final checked and fine calibrated (aligned) in Sweden. Direction, (balance between the halves, picture 3): max throw (run out)= <0.03/side. In the weight ratio, very well balanced crankshaft for optimal function and very little vibration, especially when used together with NTS pistons. Supplied complete with needle bearing for the piston pin. Technical data: Needle bearing: 10x14x13 (for 10mm piston pin) (13681) included Cone for flywheel: Conicity 1:5 (inlet diameter ~12mm) Thread flywheel side: M8x1.25 Cross spacer, flywheel: 3×5 (14940) not included Stroke: 43mm (49cc) Intended for switch ignition NOTE: Originally fitted from 1982 - but can also be used for older models if the piston is also changed to a piston with a 10mm piston bolt!