4 Best Gas Powered Motorized Bicycles 2025 in the United States

The Upyouths 100CC Bicycle Engine Kit is designed to convert a regular bicycle into a motorized one. Made from high-quality aluminum, iron, and plastic, this kit promises durability and wear resistance. The 4-stroke engine provides a stable, reliable ride that is quieter compared to 2-stroke engines. The engine has a max output of 3HP and a top speed of 3600rpm, which is suitable for short commutes and leisurely rides. Its fuel tank capacity is 1.6 liters, making it reasonably fuel-efficient with a consumption rate of less than 420 g/KW.h.

The frame material ensures robustness, and the 56mm bore cylinder allows for improved bearing capacity and reduced working temperature, which aids in easier starts and sustained performance across various speeds. Weighing over 46 pounds, the kit might add significant weight to your bike, potentially affecting maneuverability. Professional installation is recommended, which could be a drawback for those looking for a DIY project.

This engine kit will appeal to those seeking a reliable and efficient way to motorize their bicycle, though potential buyers should consider the weight and possible need for professional installation.

The Upyouths 100CC Bicycle Engine Kit is designed for those looking to convert their regular bicycles into gas-powered bikes. It includes everything needed for the conversion, like the engine, CDI assembly, fuel tank, carburetor, and more. This kit is compatible with most 26” and 28” bikes including mountain bikes, road bikes, gravel bikes, and beach bikes, making it versatile across different bike types.

The 2-stroke engine is known for its fuel efficiency, offering up to 150 miles per gallon, which is economical for long-distance riders. However, 2-stroke engines tend to be noisier and require regular maintenance, such as adding solid oil between the gears. This might be a consideration for those who prefer a quieter ride or less upkeep. The materials used in the kit are aluminum, iron, and plastic, which suggests a durable and sturdy build.

Given its weight capacity and engine size, it is suitable for adult riders looking for a reliable and energy-efficient biking experience. The 1-year manufacturer's warranty adds a layer of assurance regarding its quality and durability.

The MOCHAG 100CC Bicycle Engine Bike Motor Kit is designed for those who want to convert their regular bike into a motorized one. It's equipped with a 2-stroke, 100CC engine that offers a robust performance with a top speed of 28mi/h, making it a good choice for those needing to cover distances quickly and efficiently.

One of the strengths of this kit is its fuel efficiency, with a consumption of approximately 0.66 gallons per 100 kilometers, which allows for longer trips without frequent refueling. The large fuel tank, holding up to 0.53 gallons, supports extended journeys, and the engine runs quietly at around 75 decibels, minimizing noise disturbance.

The high weight capacity of up to 440 lbs is impressive and means it can accommodate a range of riders and additional cargo. Its construction features durable materials like aluminum and iron, ensuring longevity and stability. Prospective users should also consider the weight of the kit, which is 22.4 pounds and may affect the handling of the bicycle. This kit is best suited for those looking to motorize mountain, road, or beach bikes, and value durability and fuel efficiency.