Police said that they pulled over the unidentified 27-year-old and his 20-year-old passenger, both from Spring Valley, and charged them with fifth-degree possession of stolen property.
They also face felony charges because the vehicle identification number on the mini-bike had been defaced, police said.
One of the arresting officers recognized the passenger and remembered seeing him riding an ATV the previous week.
The mini-bike had been stolen from Clarkstown, and the ATV from Orangetown, police said.
The 20-year-old was then charged with fourth-degree criminal possession of stolen property, a felony, in the Orangetown case, police said.
Police answered a total of 143 calls on Thursday, including eight medical emergencies, two fires, and 17 alarm activations.
They also investigated 15 motor vehicle accidents in the following locales: Monsey, New Square, Viola, Montebello, South Spring Valley, Kaser, Hillcrest, Chestnut Ridge and New Hempstead.
Three of those accidents involved injuries, police said.
Click here to follow Daily Voice Ramapo and receive free news updates.