The new 67HR EVO engine has been designed for circuit racing boats with nitro fuel for high RPM. The latest model features a new 8 port piston/liner, new crankcase with re-designed boost and transfer ports.
-  4.8 HP / 28,000 RPM
-  Bore: 24.6 mm
-  Stroke: 23.1 mm
-  Displacement: 10.97 cc