Specification:
- Displacement(c.c. / cu.in.): 10.58/0.646
- Bore(mm / in.): 24.2/0.953 
- Stroke(mm / in.): 23/0.906  
- Practical R.P.M.(R.P.M.): 2.000~16.000
- Output(BHP/RPM): 2.00/15.000  
- Weight(g/oz): 693.4/24.46 

The Thunder Tiger GP-65 airplane engine is designed and developed under the ''Green Power" concept and feature a one-piece crankcase with an integrated carburetor body design to lower overall parts count.
No mounting screws are required for the cylinder head and backplate and a cast slot engine mount design simplifies the machining process.
Equipped with 3-chamber muffler, noise levels are greatly reduced while delivering excellent performance and lower fuel consumption.
Finally, the swept-back needle valve design and precision air bleed carburetor make operating the GP-65 airplane engine a safe, reliable and simple procedure.