Best Motorized Bicycle Kits of 2021

Welcome to our annual list of the best motorized bicycle kits of the year. As the #1 motorized bicycle retailer in the world, we're constantly asked which bike motor kit is the best. The answer is — it depends. It depends on the application, budget, riding style, range requirements, and even the builder's mechanical aptitude — and so much more.

This is our comprehensive list of the best motorized bike kits of 2020. The list below will cover our best sellers and highlight to whom these kits are best suited for. How did we rank these bike engine kits? We curated this list by combining customer feedback, our expert testing, reliability, warranty claim rates, and overall build quality to chose our five favorites. Because value is important, we also took into consideration the different price points of each motorized bike kit to give a balanced ranking.

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66/80cc BBR Tuning Silver Angle Fire Engine and All Accessories

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BBR Tuning Racing Series Stage 4 66/80cc 2-Stroke Engine Kit - engine with parts

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49cc BBR Tuning 5G Pull Start Bicycle Engine Kit- 4 Stroke - engine with parts

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66/80cc BBR Tuning Bullet Train Electric Start Engine Kit - Silver - engine kit with parts

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TOP 5 BEST MOTORIZED BICYCLE KITS

#1 66cc BBR Tuning Silver Angle Fire Bicycle Engine Kit - 2 Stroke

The BBR Tuning Silver Angle Fire 2-Stroke motorized bicycle kit is consistently our #1 best seller. It's our top seller for good reason — the BBR Tuning Silver Angle Fire engine comes standard with upgrades never seen at this price point. At a price of just $179.95, this kit comes standard with an exclusive injection-molded open transfer port cylinder body design, super strong 8mm engine mount studs, Grade-8 Allen key bolts, and even an extra-wide 40mm intake stud spacing.

This engine is engineered to be both high performance and highly reliable, a combination that is rarely seen in a motorized bicycle kit. You would be hard-pressed to find a more feature-rich motorized bike kit at this price point, which is why we rank this kit #1 in 2020.

#2 66cc BBR Tuning Racing Series Stage 4 Engine Kit - 2 Stroke

BBR Tuning took the highly rated standard 2-stroke engine kit and took it one step further with the Stage 4 Racing Series motorized bicycle kit. Specially designed and engineered for maximum performance, this Stage 4 engine comes standard with the best performance parts in the industry. This includes a tuned expansion chamber, CNC billet high compression cylinder head, and performance-tuned high-performance carburetor. In addition, this engine is sure to fire properly with the spark dream team: an NGK spark plug and Stage 1 Performance CDI.

If you're looking to destroy your competitors on the track, the BBR Tuning Racing Series Stage 4 engine kit is the one for you.

#3 49cc BBR Tuning 5G Pull Start Bicycle Engine Kit- 4 Stroke

Coming in at #3 on the list is the flagship 4-stroke engine kit from BBR Tuning. If you're looking for the ultimate commuter, the BBR Tuning 5G kit should definitely be on your radar. Typically, 4-stroke engine kits are highly reliable engines that can be run for longer distances than 2-stroke engines without concern of overheating or failing. In addition to its durable components and design, this engine is also coupled with the industry's only dual chain automatic transmission for the most reliable engine kit on the market.

#4 66/80cc BBR Tuning Bullet Train Electric Start Engine Kit - Silver

If you're looking for a motorized bicycle kit with all the bells and whistles, the 66cc BBR Tuning Bullet Train Electric Start Engine Kit is definitely your #1 choice. With exclusive features such as an electric starter, back up pull starter, ultra-premium engine casing, port-matched exhaust, and upgraded Grade-8 hardware, it's easy to see why the Bullet Train bike engine kit is the pinnacle in motorized bicycle design.

#5 BBR Tuning 49cc 5G Lock-N-Load Friction Drive Bicycle Engine Kit- 4-Stroke

Coming in at #5 is the shockingly easy to install BBR Tuning 49cc 5G Lock-N-Load Friction Drive 4-stroke bike engine kit. Typical installation time is less than 30 minutes, so you'll be ready to ride in no time!

The Lock-N-Load kit features the ultra-reliable 49cc 4-stroke engine and is coupled with a proprietary friction drive transmission. The transmission can be engaged and disengaged with ease, allowing you to pedal the bike as if there were no motor, as well as engage the motor to cruise around town without breaking a sweat!

What makes BikeBerry different?

Not only do we offer the largest selection of high quality motorized bike engine kits, we also provide the best technical support and customer service in the industry. If you've been into motorized bikes for some time I'm sure you've come to realize a lot of companies will provide help in purchasing your engine but when it comes time to support after purchase there is no assistance. Our engine experts are there for you every step of the way from purchase, installation, and any technical questions that may come up.

Motorized bikes are relatively simple but require maintenance and need replacement parts. We carry every single part for our engines to ensure our customer never have any downtime because they can't get a part they need.

Even though other companies might claim they provide a warranty, they often make it difficult to use and don't cover any of the parts you need. The warranty we provide with our engine kits cover all parts excluding wear and tear items such as gaskets and chains. Our engine support experts make sure any warranty claim is simple as possible for our customers and any parts are replaced as soon as possible.

WHAT DO OUR CUSTOMERS HAVE TO SAY

⭐⭐⭐⭐ "Excellent high revving engine" -Ron Mac

"I have Three flying horse two-stroke engines in use with the fourth on the way and these are excellent – top shelf - high revving -dependable engines. My son-in-law and my brother-in-law have the same engine and neither of us has had any type of failure or issue to date. Although we’ve had these only a short time of a year and a half and have driven around 1500 miles with no issues, everyone of them have held up with no issues – none. Our bikes run in the 25 mile an hour range and we have a few that run 37 mph. They are great fun and a great father – son project. One last note Bike Berry is a great company to deal with. Great customer service and a great product that is dependable. I am 2000 miles away and have always been satisfied with the service and product I have received from Bike Berry."

⭐⭐⭐⭐ "Always the best" - Peter Oster

"I have ordered motors off of ebay to save money on shipping and the products from other companies do not compare! this is the 7th motor i have ordered from bike berry and the technology is always advancing... customer service is supreme! I called yesterday to swap parts for a back ordered part and was extremely impressed. Thank you so much bike berry! Youre running your business right!"

⭐⭐⭐⭐ "2200 Miles and still riding strong!" - Daxton Baxter

"I bought my first kit in February and have put on over 2200 miles, ridden more than 500 of them on dirt and gravel logging roads looking for the remotest camping and fishing areas. I bought a second kit and now am purchasing a third. Plus Bikeberry replaces any parts from defect in a timely manner."

What makes BikeBerry different?

Not only do we offer the largest selection of high quality motorized bike engine kits, we also provide the best technical support and customer service in the industry. If you've been into motorized bikes for some time I'm sure you've come to realize a lot of companies will provide help in purchasing your engine but when it comes time to support after purchase there is no assistance. Our engine experts are there for you every step of the way from purchase, installation, and any technical questions that may come up.

Motorized bikes are relatively simple but require maintenance and need replacement parts. We carry every single part for our engines to ensure our customer never have any downtime because they can't get a part they need.

Even though other companies might claim they provide a warranty, they often make it difficult to use and don't cover any of the parts you need. The warranty we provide with our engine kits cover all parts excluding wear and tear items such as gaskets and chains. Our engine support experts make sure any warranty claim is simple as possible for our customers and any parts are replaced as soon as possible.

What makes BikeBerry different?

Q: What is a motorized bicycle?

A: Simply put, a motorized bicycle is a regular bicycle that has been fitted with a motor. The concept has been around for ages and was truly the start of the modern-day motorcycle. In the past, building a motorized bicycle required hobbling together different parts and components and requiring an endless amount of customization. Our BikeBerry kits make the process quick and easy with our universal fit motorized bicycle kits.

 

Q: What kind of bicycle can I use with a motorized bike kit?

A: Most 26-inch wheel V-frame style bicycles can be motorized. V-frame bicycles are bikes that do not have rear suspension. Our motorized bicycle kits are universally compatible to fit almost any bike. For a complete guide on how to measure your bicycle to ensure compatibility, please see the below video.

Q: What's included with the purchase of a motorized bicycle kit?

A: All of our kits come 100% complete with everything that you need to convert a regular bike into a motorized bicycle. The only items that iare not included are the basic tools needed for installation. This includes screwdrivers, wrenches, and a drill.

 

Q: How difficult is it to do the installation?

A: Basic mechanical aptitude is required to install our motorized bike kits. If you're used to turning a wrench, or if you can follow instructions, you should be able to motorize your bike. All of our kits are accompanied by a very detailed, easy-to-follow installation video specifically made for each engine type. Please see our detailed installation guides here.

Q: Is there a warranty with your motorized bike kits?

A: Yes! All of our Flying Horse, BBR Tuning, and Mega Motors kits include the industry's only 6-month warranty. All of our products also come with lifetime technical support! We're just a phone call or email away. With over 12 years in the business, our experts have seen it all and are happy to guide you through any hurdles you may have with the installation process.

 

Q: Are parts readily available for my motorized bicycle?

A: Absolutely! We pride ourselves on having the largest inventory and selection in the industry for any replacement parts that you may need. We also ship from multiple warehouses (California and Pennsylvania), so you'll be sure to get your order fast! When you're ready to upgrade your motorized bicycle, we have a huge selection of performance and aftermarket parts to make your motorized bike faster, more reliable, or better-looking!

Q: What's the difference between a 2-stroke and 4-stroke engine kit?

A: For a detailed look on the biggest difference between a 2-stroke and 4-stroke engine kits, enjoy the following in-depth guide:

Q: Can you pedal a motorized bicycle?

A: Yes! With a motorized bicycle kit installed on your bike, you can still pedal the bike as normal. However, due to the added weight and extra drag from the engine chain, you will have a bit more resistance when pedaling. For little to no drag while pedaling with a motorized bike, we recommend the Lock-N-Load 4-stroke engine kit.

Q: How do you start a motorized bicycle?

A: For 2-stroke engine kits, you bump start the motor. In other words, you first disengage the clutch, pedal the bike, and then release the clutch. For engine kits fitted with a pull starter, you simply pull-start the engine.

Q: How far can a motorized bicycle go?

A: To ensure a long life for your engine, we recommend that 2-stroke motors not be run for more than one hour of continuous use. A 4-stroke motor, on the other hand, can be run for up to three hours of continuous use.

Q: What size sprocket is best for a motorized bicycle?

A: All of our motorized bicycle kits come standard with a 44-tooth sprocket. The reason for this is because the 44-tooth sprocket is the best combination of acceleration and top speed. When increasing the sprocket size, you will increase torque at the expense of top-end speed. Conversely, if you decrease the sprocket size, you will increase the top-end speed at the expense of torque.

Q: Where can I buy a motorized bicycle kit?

A: BikeBerry.com is the nation's largest motorized bicycle kit distributor. With over 12 years in business, you can trust BikeBerry to be you're number 1 source for all your motorized bicycle needs.