The new 2025 1.01 RS.3 marine engine features a new crankshaft supported by twin ball bearings for greater stability at higher RPM. Also features a new ABC Liner, modified cylinder porting, 3 exhaust ports and 5 inlet ports, improved transfer and boost ports. Also features double fixed crankshaft with two bearings, steel conrod with needle bearings, thin Zimmerman disk intake with increased section in central area. Black crankcase with new Red single chamber water cooling jacket, single plug head, bolt on Carburetor and R/C 3rd channel remote main needle valve.
-  6.9 HP / 26,000 RPM
-  Bore: 29.0 mm
-  Stroke: 25.2 mm
-  Displacement: 16.6 cc