10 Best Motorized Bike Kit 2022 – Complete Review and Buying Guide

If you are a fan of bike riding and you are also good at doing things yourself, then you sure are suited to purchase bicycle engine kits. This kit allows you to transform your standard bike into a motorized one that is able to get up to the speed of 40 miles per hour.

Although, you would need to do a substantial amount of pedaling, and you will be required to do this if you are going uphill.

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Motorized Bicycle Engine Kits

Other than the fact that your motorized bike would require you to do a little extra pedaling, a motorized bicycle is one great way of moving around, especially when you look at the fact that it is fuel-efficient.

To get the best out of your kit, there are a few things you would need to consider; for example, you would need to match your kit to the present bike. You should also have knowledge of the fuel-to-oil ratio that is required of you.

Best Bicycle Engine Kits: Quick Answer

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Best Motorized Bike Kits 2022 In View

Below is a review of the top bike kits that come complete with all the necessary information you need.

1. 49cc Flying Horse 5G 4-Stroke Bicycle Engine Assembly Motor + Carb + Exhaust – Best Replacement Kit

49cc Flying Horse 5G 4-Stroke Bicycle Engine Assembly Motor + Carb + Exhaust

Flying Horse, the makers of this model, is a big name in the engine kit manufacturing business, and their products are highly durable, and they are made with high quality. The 49cc Flying Horse 5G 4-Stroke Engine Assembly model is certainly no different.

The height of the engine is about 9 inches, it has a width of about 7 inches and a length of 9.5 inches; what this means is that you would only need about 14 inches of clearance between both the top and the bottom bars so that the engine will fit well. But, on the other hand, if you are an owner of a 20 inches bike, this kit is not suited for you. If you have in your possession a 26 inches cruiser type of bike, this kit will sure do.

Although this motor can either sit inside a frame or it is rear-mounted, you would need to buy the kits that accompany it so it can give way for this. Let us take for example, say, you plan on rear mounting the motor, then you would need to get the friction drive kit that would allow you to install the engine on the rear of the bike.

The 5G in its name shows that the motor is a 5th generation type. The 49cc stands for the capacity of the engine, and it is also combined with other factors like the Horse Power, helping you to determine what your bike’s top speed is after installation.

The 49cc 4-stroke motor was made to give you 10.2 KW of power and to help you reach speeds in the range of 15 mph, even though you can still go higher. The bike can travel for up to 100 miles per gallon, meaning that the bike kit is very fuel-efficient.

It is important to know that although this kit comes equipped with an assembly motor, a carburetor, and an exhaust, and other parts like the transmission are not a part of the kit. But the good news is, that the parts that are involved are readily compatible with transmissions that are manufactured by other brands.

What this means is that if you are already in possession of a transmission or if you would rather buy a transmission from another brand, the motor will still work. Another thing is, this kit would make a great replacement kit, that is if you so wish to replace any of the listed parts.

  • The powerful engine of the kit can move the bike uphill quite easily.
  • The compatibleness of the parts of this kit with other manufacturer’s models.
  • The kit is strong enough for it to be durable.
  • The motor makes use of a forced air displacement cooling system that helps to deal with overheating.
  • You might confuse this kit for a full bike engine kit.


2. BBR Tuning 49cc Lock N Load Bicycle Engine Kit (4-Stroke Friction Drive Gas Powered Bike Motor Kit) – The Kit with the Best Transmission

BBR Tuning 49cc Lock N Load Bicycle Engine Kit

This is another great product from Flying Horse. The first thing you should notice is that the Lock N Load Bicycle Engine Kit is a full engine kit that is made up of all the parts that you would need to get your bike motorized. The motor is also a 5th generation (5G) which suggests that it has a dual chain transmission. These (the dual chain transmission) are considered the best working transmissions available for bikes.

Because it is a 4-stroke kit, it allows it to be quieter and it does not require so much maintenance.

This kit comes with both the centrifugal clutch and a pull start. And because of this, you are not required to either engage or disengage the engine manually. What you would need to do is to pull the starter cord and then you hit the throttle.

The engine comes with its very own oil reservoir, meaning that the trouble of trying to determine the ratio of oil to the gas mixture is far away from you. Its separate reservoir aides a well-lubricated engine that plays a very important role in making sure that the motor is both durable and reliable.

The engine of this kit has 1.5 – 2.5 Horse Power. With this kind of power, your bike will be able to attain a speed in the range of 20 and 25 mph. More to this, your bike will travel easily 100 to 150 miles per gallon. This kind of high performance from the kit is what determines that you get value for your investment, that is if you choose to get the kit.

The kit has been made to fit nearly all bikes that come with standard tires. Since the motor mounts over the wheel and not on the frame, it makes it very easy to attach the motor on a wide variety of bikes. This includes bikes that come with non-standard frames.

Because of the motor’s dimensions of 9 x 9.5 x 7.5; the engine is compact, and this means that once you have it installed, it will not ruin the beauty of your bike.

  • It is easy to mount and install within the span of three hours.
  • The engine is made compatible with tires that are up to 3 inches.
  • The motor has just enough power for hilly terrains.
  • The high-quality material that is used in the manufacturing of this kit means that it is of high quality.
  • There is no installation manual.


3. Seeutek PK80 80cc Bicycle Engine Kit 2-Stroke Gas Motorized Bike Motor Kit Upgrade with Speedometer – Best Value Bike Kit

Seeutek PK80 80cc Bicycle Engine Kit 2-Stroke Gas Motorized Bike Motor Kit Upgrade with Speedometer

Seeutek PK80 80cc bicycle, the manufacturers of the Seeutek PK80 80cc Bike Engine Kit, are just as recognized as Flying Horse. This kit has all the components and instructions needed to help make your bike fully motorized. It is compatible with bikes with 26 inches and 28 inches wheels.

It is recommended that your bike has at least 9 – 11 inches of clearance between both the bottom bracket and the top bar. Examples of the bikes that fit with this kit are the Mountain bike, a Cruiser or a Chopper Road.

This kit has an 80cc engine capacity, it is also a 2-stroke, and it has a Horse Power (HP) of 5 and 6. Due to this amount of Horse Power, your bike will be able to travel as fast as 35 mph. your bike will also be able to move 100 – 150 miles per gallon. This means that the kit aides the efficacious usage of fuel.

You should know that because the engine is a 2-stroke, it does not come with an independent reservoir. You would need to mix both fuel and the engine oil at a ratio of 16:1, It is important that you keep this ratio for new sets then you shift to a 25:1 ratio after you cover 300 Km/186.5 miles.

Oil is very crucial to the well-being of an engine, and it is wise that you never forget to mix both the fuel and the engine oil if you want to see your motor last a long time.

The Seeutek PK80 80cc bicycle does not include a pull start. So, to start, you would need to move the choke lever to the “on” position. After doing that, you would need to hold the clutch and pedal the bike fast so as to get enough speed. Then, you would need to release the clutch, you should do this gradually. If you want to come to a stop, you should disengage the clutch and use the brake.

This kit has an analog speedometer that allows you to gauge your bike’s speed and to be able to help you control it. This way, you will avoid being a recipient of tickets.

  • This kit comes with an exhaustive guide.
  • It is reliable, especially after you upgrade it. For example, screws on the engine have been replaced with hardened ones.
  • The power of this kit is sufficient enough for hilly and uneven terrains.
  • You just might need to replace some parts, like the throttle cable so you can maximize its efficiency.


4. 66/80cc Flying Horse EPA Approved Silver Angle Fire 2-Stroke Motorized Bicycle Engine Kit – The Most Environment-Friendly

66_80cc Flying Horse EPA Approved Silver Angle Fire 2-Stroke Motorized Bicycle Engine Kit

If you are someone who is environmentally conscious, then you might need to get this kit. Its engine is certified by the United States Environment Protection Agency (E.P.A). It is a fully equipped kit that is great for a beach cruiser, mountain bike or road bike.

The engine has a 66/80cc carburetor that is of high performance and it gives an extra boost of power. The engine is powerful, so much so that it is enough for speeds in the range of 25 to 35 miles per hour. The fuel economy is at 150 miles per gallon. And what this means is that going green will certainly not affect its efficiency since the 150 mpg can be compared to the other high-performing kits.

The reason that this particular kit is certified by the EPA is that it is in compliance with the EPAs emission standards. It comes with a special muffler that is equipped with a catalytic converter that helps to clean exhaust that is coming from the engine. It makes use of a particular kind of synthetic oil that is known as AMSOIL SABER which helps to keep the emissions to a minimum.

Just like the other 2-stroke engines, you would need to mix the gas with the oil. The Flying Horse Silver Angle Fire needs a 1:100 ratio of gas to AMSOIL SABER Professional Synthetic 2-Stroke oil. With this kind of oil-to-gas ratio, the motor is not just clean, but the emissions are also little.

You should know that with this kind of kit, you cannot use other oils or fuel ratios. If you do, then you will be ruining your motor’s engine. Also know that just like the Seeutek that was mentioned earlier, you would have to use a pedal and clutch to start the engine.

  • It is of high quality
  • It was designed for hilly paths
  • It is quiet when compared to the other 2-stroke models
  • It has minimal emissions
  • If you use any other kind of synthetic oil, you will void the warranty that comes with this kit.


5. 80cc 26 Inches 28 Inches Bike Bicycle Motorized 2-Stroke Cycle Petrol Gas Engine Kit Set – Highly rated Motorized Bicycle Engine Kits

80cc 26 Inches 28 Inches Bike Bicycle Motorized 2-Stroke Cycle Petrol Gas Engine Kit Set

This kit that is made by Roadstar not only fits most 26 inches and 28 inches-wheeled bikes, it also fits most 24 inches-wheeled bikes. It comes with a 2-stroke 80cc engine that has enough power to get a top speed of 38 miles per hour. 38 mph is as fast as a scooter or a motorcycle. It’s 5 – 6 Horsepower helps to increase this kind of speed.

It consumes approximately 2.5 liters of fuel per 100 Km; its motor is fuel-efficient. This consumption translates to 100 miles per gallon.

The tank has a 2 liters capacity. And as mentioned earlier, it has a 2-stroke engine, meaning that you would have to mix both the fuel and the gas. Mix fuel and engine oil at a 16:1 ratio. Keep this ratio for new sets then you should shift to a 20:1 ratio after covering 500 Km/310.6 miles.

Just like the Seeutek, this kit needs 9 – 11 inches of clearance from both the bottom bracket to the top bar.

More to this, the frame tubes should be about 2 mm to 29 mm in diameter. These measurements are flexible, and they will easily accommodate bikes like mountain bikes, cruisers, and road bikes.

The motor makes use of a forced air displacement cooling system that precludes overheating. You should know that just like most 2-stroke kits, this engine can get very noisy.

  • It is made of high quality.
  • The motor aids fast speeds.
  • It is sturdy and durable.
  • The kit is very easy to install.
  • It can get very loud.


What to do Before You Purchase a Motorized Bicycle Kit

How to Build Motorized Bicycle

1. Determine the Right Type of Kit for Your Bike

When you are picking out a bicycle engine kit, it is vital that you choose the right kind of engine kit that is suited to your bike. To do this, you would need to ask yourself two questions.

The first is, what is your bike’s wheel cycle? Some kits can fit only 26 inches or a 28 inches-wheeled bike. Others can fit a 24 inches-wheeled bicycle. You should always check to know if your bike meets the wheel cycle requirement before you buy.

This way, you will not buy a kit that you will no be able to use or a kit that will force you to get a new bike.

The second question is, what is your bike’s seat tube height? In a normal V-frame bike, most kits require that the seat tube height falls between 9 and 11 inches. This way, there is enough clearance that will leave enough space so you can install the bike engine.

If your bike does not meet the requirement, then you should better purchase a kit that can be mounted somewhere else, like the rear.

Once you are able to answer these two questions, then you will be able to get a kit that is compatible with your bike.

2. Read Many Reviews

Reviews really matter when it comes to you getting engine kits. They will let you know just how long-lasting and efficient a particular bicycle kit is. Reviews reveal if a kit is quite easy to install. Reviews will let you know if you will easily get replacement parts and the kinds of speeds that you should expect.

Basically, reviews help to narrow down your options and eventually determine the specific motorized kit that you will go for. So, go through all the reviews from people who have bought a product that catches your fancy.

Build a Motorized Bike at home

3. Compare Prices for Better Deals

Many brands give you the same product. When it comes down to manufacturers of bicycle kits, there are five top-rated brands:

  • Flying Horse
  • Seeutek
  • Roadstar
  • Solomon Cavalli
  • PanelTech

It depends on the kind of bicycle engine kits that you want, you should make it a thing to compare prices from the top-rated brands. This way, you will get a high-quality product that comes at a favorable price.


The guide we have given you above has the top-rated brands of motorized bicycle kits available on the market today listed. You should know that while there are only three brands mentioned in the list, more brands produce high-quality models.

Make it a thing to always research the top-rated brands and know what reviewers are saying about them. After you do this, you will be able to know the brand and product that you want.