High quality full circle crankshaft from swiing suitable for Puch X30 Sport NS / NL and Puch Maxi S2. Only suitable for mopeds with wind-cooled Z50 engines with manual shifting - not for fan-cooled Puch X30 Velux engines! This standard crankshaft is ideal for un-tuned engines, as its design is the same as the original. It is a crankshaft with reinforced connecting rod for 12mm piston pin.Puch OEM no. for comparison purposes only: 349.1.10.215.0Dimensions: Stroke: 43mm Weight (with connecting rod): 886g Total length cheek pin, coupling side: 57mm Total length cheek pin, ignition side: 66mm Diameter on clutch side: 1st heel: 17mm , 2nd heel: 15mm , 3rd heel: 10mm Diameter heel ignition side: 17mm Thread on clutch side and ignition side: MF10x1mm Diameter crank webs: 69.9mm Crank cheek width: 34mm Conrod eye top diameter: 15mm Diameter connecting rod pin bottom: 16mm Length connecting rod: 90mm A 12/15x14.2mm needle bearing is included.