O.S.SPEED
ENGINE:O.S.SPEED R21 EURO SPEC

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Displacement 3.49cc / 0.213cu.in. Code No.1C400
Comboset:1C403
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Output 2.8ps / 2.76hp / 33,000r.p.m.
Bore 16.08mm / 0.633 in.
Stroke 17.20mm / 0.677 in.
Practical r.p.m.Range 4,000-45,000 r.p.m.
Weight 340g / 11.99oz