7 Best 4-Stroke Bicycle Engine Kits – 2022

About 4-stroke bicycle engine kits

Motorized bicycles are becoming a trendy means of transportation. Not only are they very functional and cost-saving, but maybe even more important, they are enjoyable to ride.

With a gas bike motor, you can arrive at your destination sooner, full of energy and sweat-free using, and all for only pennies in fuel costs.

Although most 4-stroke bicycle engine kits use similar technology, there are still many quality and price variations. We cover the best 4-stroke bicycle engine kit brands on the market, including Anbull, MOTOOS, Seeutek, HOTSTORE, GDAE10, Lfhelper, DONNGYZ, and KABOCHO. These bicycle engine kits come with everything needed for a complete motorized bicycle. In addition, they work on most men’s and women’s bike styles. Let’s take a look at each bike kit.

Top 7 Best 4-Stroke Bicycle Engine Kit Reviewed.

1. Anbull 49CC 4-Stroke Gas Petrol Motorized Bike Bicycle Engine Motor Kit for 28” V Frame Bike and 26” ATV

…click image to see more on Amazon Over the years, Anbull has earned a reputation for making some of the highest quality 49cc 4-stroke bicycle engine kits on the market. Anbull 49CC 4-Stroke Gas Petrol Motorized Bike Bicycle Engine Motor Kit for V Frame Bike and 26″ bikes with a top tube frame. With a powerful motor and 44 tooth 9 hole sprocket, this setup results in a speed of 27-32 MPH / or 43-51 KPH. Has a 41.8 x 36 mm bore stroke and 49 cm3 displacement. See more on Amazon…

2. MOTOOS 49CC 4-Stroke Motorized Cycle Petrol Gas Engine Motor Kit Fit for Normal 28″ V Frame Bike and 26″ ATV Bike Bicycle Full Set

…click image to see more on Amazon This 49cc 4-stroke pull-start gas engine conversion kit fits a standard 28 V frame bike or 26 standard bikes. With a powerful motor and 44 tooth 9 hole sprocket, this motor runs 27-32 MPH / or 43-51 KPH. MOTOOS is an underrated 4-stroke bicycle engine kit not experiencing the same attention as its competitors. It’s everything you need at a price that can’t be beaten.See more on Amazon…

 

3. HOTSTORE 4-Stroke Bicycle Engine Kit 49CC Engine Motorized Bike Kit Gas Motor Pull Start Conversion Kit Air Cooling Motorized Engine Bike Motor Kit

…click image to see more on Amazon HOTSTORE is well known among the bike owners community. A powerful 4-Stroke Single Cylinder Engine With Air-Cooling. The 49CC Engine Motorized Bike Kit is suitable for Mini Pocket Pit Dirt Bike Gas Chopper G-Scooter ATV Quad Bicycle modified pedal go-kart. Even if for cruising only on the weekends. The HOTST is definitely a sound investment.See more on Amazon…

4. 49CC Motorized Bicycle Kit Bike Engine Kit Single Cylinder 4-Stroke Gas Petrol Motorized Bike Engine Scooter Belt Gear

…click image to see more on Amazon GDAE10’s 49cc 4-stroke pull-start gas conversion kit with a 29cm crank sprocket is ideal for bikes with 26-inch frames. The tank holds 2 liters of gas, and everything comes with the kit. Has a top speed of between 27 – 32 MPH / or 43 – 51 KPH. The kit comes with a throttle with a built-in kill switch and throttle cable. Comes with all the kit needed for a 26-inch bike. It is powered by a single-cylinder, air-cooled, 4-Stroke, OHV single-cylinder engine with a Bore x Stroke (41.8 x 36 mm) and a compression ratio of 8.0:1. Net Horse Power Output： 1.6kW (2.1HP) at 7,000 rpm; Net Torque 2.7 Nm ( 2.0 lb-ft) at 4,500 rpm; PTO Shaft Rotation Counterclockwise (from PTO shaft side) The GDAE10 4-stroke bicycle engine kit can run with the big boys.See more on Amazon…

5. Lfhelper 49CC 4-Stroke Bicycle Engine Kit Gas Petrol Motorized Bike Motor Kit Model 142F Air-Cooled OHV Single Cylinder

…click image to see more on Amazon Lfhelper’s 49cc 4-stroke gasoline conversion kit for adult bikes. Ideal for 26″ frames and other bikes. The top speed is 27-32 MPH/ or 43-51 KPH. The tank holds 2 liters of gas, and everything comes with the kit; Engine model 142F.See more on Amazon…

6. DONNGYZ 49CC Motorized Bicycle Kit Bike Engine Kit Single Cylinder 4-Stroke Gas Petrol Motorized Bike Engine Scooter Belt Gear(US Stock)

…click image to see more on Amazon This is also a 49cc 4-stroke pull-start petrol conversion kit for adult bicycles—ideal for bikes with 26-inch frames and similar. Long-term spares are available as required. The tank holds 2 liters of petrol, and everything comes with the kit. The top speed of between 27 – 32 MPH / or 43 – 51 KPH. The price was right for the workmanship and value for money.See more on Amazon…

7. KABOCHO 4-Stroke 49cc Petrol Gas Motor Bicycle Engine Complete Kit Motorized Bike

…click image to see more on Amazon The 49cc 4-stroke fuel conversion kit fits 28 V-frame bikes and 26 ATV bikes. With a powerful engine and a 44-tooth 9-hole sprocket, this engine has a speed of 27-32 MPH / or 43-51 KPH. The 49cc 4-stroke engine kit is perfect for cruising around town.See more on Amazon…

 

There are immense benefits to choosing a 4-stroke engine over a 2-stroke engine.

Buying a 4-Stroke Engine over a 2-Stroke means:

• More HP – Higher torque at lower RPMs.
• No need to mix oil with fuel – Less pollution and more convenient.
• Longer Life – Four-stroke engines tend to last longer, run cooler, and safely run for more extended periods.
• Quieter – 4-stroke engines make less noise than 2-stroke engines.

Fuel Costs for a 4-stroke bike

Consider a 4-cycle engine that can get far more than 100 miles per gallon. Now, let’s figure a hypothetical example. Let’s say fuel gets expensive, up to $3.00 a gallon, and you’re only getting the low end of 100 miles per gallon. So you’re looking at a low fuel cost of .03 per mile.

Most bike fuel tanks are 2-liters. Converting that to gallons, it’s approx .26 gallons or very close to a quarter gallon of fuel capacity. So having a full 2-liter gas tank works out to be over 25 miles of travel between refuels.

Not too bad, considering that some 4-stroke bike motor kits are capable of 35 MPH, your bike could go as fast as a small moped or scooter and keep up with traffic on many residential roads for pennies a mile. Well worth the engine’s cost, a cheap road or mountain bike, and a few hours of installation, in my opinion.

 

FAQs

What is the difference between a 2-stroke and a 4-stroke?

A four-stroke engine means the pistons make four strokes (or two revolutions of the crankshaft) to complete a full intake cycle, compression (with ignition), output, and exhaust strokes.