Honda HRC216PDA Owner's Manual page 66

TECHNICAL AND CONSUMER INFORMATION
Engine Design and Performance
Engine Model
Engine Type
Displacement
Bore and Stroke
Compression Ratio
Ignition System
Maximum Horsepower
Maximum Torque
64
GSV160
4-stroke, overhead-cam, single-cylinder,
forced air-cooled
9.8 cu in (161 cc)
2.5 x 2.0 in (64 x 50 mm)
8.5:1
Transistorized magneto
5.5 bhp (4.1 kW) at 3,600 rpm
8.4 ft-lb (11.4 N•m) at 2,500 rpm