O.S. Engine #13941 - 21XM Ver.II  [OS-13941]

Displacement:3.46cc(0.211cu.in)
Output:1.3ps/25,000r.p.m.
Bore:16.6mm(0.654in.)
Practical r.p.m.Range:3,000-25,000r.p.m.
Stroke:16.0mm(0.630in.)
Weight:670g(23.6oz.)