Specification:
- Displacement(c.c. / cu.in.): 9.98c.c. / .609 cu.in. 
- Bore(mm / in.): 23.5 mm / 0.925 in.
- Stroke(mm / in.): 23.0 mm / 0.906 in. 
- Practical R.P.M.(R.P.M.): 2,000 ~ 17,000 rpm 
- Output(BHP/RPM): 1.85 BHP / 16,000 RPM)
- Weight(g/oz): 758.4 g / 26.75 oz 

The PRO engine series feature aerospace-technology ball bearings for supporting the crankshaft at high RPM while the Schnuerle-boost combustion porting delivers greater power and fuel economy. The Pro Series engines are equipped with twin ball bearings, twin needles and ABN-type piston and cylinder for years of trouble-free performance.

All Pro Series engines deliver exceptional power-to-weight ratio and value, making them fantastic 2-stroke powerplants for model airplanes.

Side exhaust
ABN construction : Aluminum piston with Nichel-plated brass cylinder liner
Hypereutectic machined Al-Si ringed piston
High-strength connecting rod with bushings pre-installed
One-piece crankcase with squared-off cooling fins
Dual ball bearing-supported crankshaft
Vertical fins heat sink head for optimum air cooling
3- Chamber muffler included
2 Needle valves carburetor
Swept back needle valve for added safety adjustment
State of the art CNC machined components
Redline R2 glow plug included