Comparison of Indian Model O 1918 and Indian Model O 1917

Attribute	Indian Model O 1918 ×	Indian Model O 1917 ×
General
Production from (year)	1918	1917
Make	Indian	Indian
Model	Indian Model O	Indian Model O
Category	Allround	Allround
Engine and transmission
Engine type	Twin, four-stroke	Twin, four-stroke
Displacement (cm³)	257	257
Transmission type,final drive	Chain	Chain
Bore (mm)	63.5	63.5
Stroke (mm)	63.5	63.5
Fuel control	Sidevalves	Sidevalves
Clutch	Three speed	Three speed
Chassis
Front suspension	Pivoting fork	Trailing link fork
Rear suspension	Rigid	Rigid
Seat	Solo seat with springs	Solo seat with springs
Performance
Top speed (km/h)	57	57