The .80HR engine has been designed for circuit racing boats with nitro fuel. The latest model features a new re-designed crankcase with larger boost and transfer ports and a new design Piston/Liner. Also includes a steel conrod with needle roller big end bearing, large bore drum valve intake with bronze bushed housing, single plug head, bolt on Carburetor and R/C 3rd channel remote main needle valve.
-  5.0 HP / 27,000 RPM
-  Bore: 27.0 mm
-  Stroke: 23.1 mm
-  Displacement: 13.22 cc