This new 2024 CMB 91GPX direct drive engine includes all the performance features of the 91M-Line three bearing bottom end plus new design GPX ABC piston/liner, Billet front housing with rubber seal. Black crankcase with special sleeve insert, new Green single chamber water cooling jacket, single plug Turbo head, bolt on Carburetor and R/C 3rd channel remote main needle valve.
 
-  7.0 HP / 27,000 RPM
-  Bore: 27.5 mm
-  Stroke: 25.2 mm
-  Displacement: 15.0 cc