Brand: SC SC52FS 52 Four Specifications: C.C. - 8.56 Bore - 23.0 Stroke - 20.6 R.P.M. - 2300-9800 Weight - 455g Rec Prop - 11 x 7, 12 x 5 Crankshaft Thread - 5/16 UNF https://www.elefun.no/p/prod.aspx?v=943

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