Okla. Stat. tit. 47, § 47-1-136: Motor-driven cycle

Motor-driven cycle.

A motor-driven cycle is any motor vehicle having:

1. A power source that:

a. if the power source is a combustion engine, has a

piston or rotor displacement of greater than thirty-

five cubic centimeters (35 cc) but less than one

hundred fifty cubic centimeters (150 cc) regardless of

the number of chambers in the power source, or

b. if the power source is electric, has a power output of

less than one thousand (1,000) watts; and

2. A seat or saddle for the use of each rider; and

3. Not more than three wheels in contact with the ground.