High end racing crankshaft suitable for Puch Maxi S, N, Supermaxi LG1 and other mopeds with a Puch 1-speed E50 engine. The high quality solid full circle crankshaft is designed for use in engines with high power increase.Highlights: Maximum pre-compression due to balancing holes with aluminum inserts. Solid connecting rod with sturdy connecting rod pin with 16mm diameter. In addition, the pin has improved balancing by a cavity inside. As connecting rod bearings were used silver bearings with excellent emergency running properties.Dimensions: Stroke: 43mm Weight (incl. connecting rod): 968g Total length cheek pin, clutch side: 74mm Total length cheek pin, ignition side: 66mm Thread, coupling side and ignition side: MF10x1mm Diameter, clutch side: 1st heel: 22mm , 2nd heel: 17mm , 3rd heel: 15mm Diameter heel, ignition side: 17mm Diameter crank webs: 69.9mm Width crank webs: 34mm Diameter connecting rod eye top: 15mm Diameter connecting rod pin bottom: 16mm Conrod length: 90mm Supplied as shown in the product photo with a 12/15x14.2mm needle bearing.