Specifications:

Displacement:13.26cc(x2)
Bore:27.7mm
Stroke:22.0mm
Practical RPM:2,000-10,000
Output:2.0hp/10,000r.p.m.
Weight:1100g
Propellers: 15"x8", 16"x6", 18"x6",18"x7", 18"x8", 20"x6"
Included:

Engine mount
Choke Valve extension
locking prop nut assembly
#F glow plugs(x2)