Cody Mong, of Oakland County's Oakland Township, died after two people in a group of four riding quads on the park's dunes collided Thursday evening. The two uninjured riders called 911 afterward.
Investigators said Mong crashed, was thrown from his vehicle and was hit by a quad driven by another rider. The other rider was taken to a hospital for treatment.
The crash is under investigation.
Lt. Craig Mast of the Oceana County Sheriff's Department said it was the first time the four riders had been to Silver Lake State Park, located along Lake Michigan.