Amazon.com: Motorized Bicycle Kit Bike Engine Kit Single Cylinder 49CC 4- Stroke 142F Air-cooled System w/Double Chain Drive Fits normal 28” V frame bike and 26” ATV bike (US Stock) : Sports &
4-Stroke 79cc Bicycle Engine Kit
79cc Monster 80 Bike Engine Kit – Complete 4-Stroke Kit – Jax Bike Motors