Displacement: 0.211 cu in (3.46 cc)
Bore: 0.654 in (16.6 mm)
Stroke: 0.630 in (16.0 mm)
Practical RPM: 3,000 - 38,000
Output: 2.10 hp @ 30,000 RPM
Weight: 25.39 oz (720 g)
Gear Ratio: 1.19:1

Displacement: 0.211 cu in (3.46 cc)
Bore: 0.654 in (16.6 mm)
Stroke: 0.630 in (16.0 mm)
Practical RPM: 3,000 - 38,000
Output: 2.10 hp @ 30,000 RPM
Weight: 25.39 oz (720 g)
Gear Ratio: 1.19:1

Displacement: 0.455 cu in (7.47 cc)
Bore: 0.858 in (21.8 mm)
Stroke: 0.787 in (20.0 mm)
Practical RPM: 4,500 - 24,000
Output: 2.46 hp @ 23,000 RPM
Weight: 12.35 oz (350 g)