O. S. 55HZ Hyper

Stock Number: OSMG1955
Displacement: 0.55 cu in (8.93 cc)
Bore: 0.91 in (23 mm)
Stroke: 0.85 in (21.5 mm)
Practical rpm: 2,000-20,000
Output: 2.07 hp @ 17,000 rpm
Weight: 14.39 oz (408 g)