5 Best Motorized Bicycle Chain Tensioners

Motorized bicycle tensioners are essential for bikes that perform better in varied conditions and provide safety benefits over time without having to change anything on the bike itself.

Motorized Bicycle Chain Tensioners help make your pedaling experience faster and easier by increasing power transmission from pedal drive to rear wheel gearbox or crankset while guaranteeing smooth operation of gears under all conditions with no need to adjust pedals manually.

Searching for the right bike chain tensioner can be a challenge. There are so many types and styles, that it’s hard to know what is best for your bicycle’s needs. In this article, you’ll find 5 of the best motorized bicycle chain tensioners out there.

What are motorized bicycle chain tensioners?

Motorized bicycle chain tensioners are devices that help keep your bike’s chain tight. They do this by securing the axle onto the frame so that the chain can’t loosen up over time. This is especially important for bikes with horizontal dropouts, as they can easily become misaligned if the chain loosens up too much.

There are a number of different types of motorized bicycle chain tensioners on the market, and it’s important to choose one that fits your bike properly.

5 Best Motorized Bicycle Chain Tensioners

Chain tensioners are essential pieces of equipment for any cyclist. A chain can only be properly lubricated and adjusted with a quality chain tensioner in place.

The 5 best motorized bicycle chainset tensioners reviewed here are all highly rated for a variety of durability and convenience.

1. Duluth Cycle Advanced 2 stroke Motorized Bicycle Chain Tensioner

Duluth Cycle Advanced 2 stroke Motorized Bicycle Chain Tensioner

This chain tensioner is a tool that makes for easier and more reliable chain maintenance. The Duluth Cycle Advanced 2-stroke Motorized Bicycle Chain Tensioner is priced around $49 to $80 per unit, depending on the size.

This product is new and has never been used. This bike comes in a number of colors including black, navy blue, bright green, red, and white.

It mounts easily over the stock clutch cover and provides perfect tension with a heavy-duty spring. Beware of other chain tensioners that come with a cheap spring- they may not be able to handle the strain of a motorized bicycle.

The Duluth Cycle Advanced 2-stroke Motorized Bicycle Chain Tensioner is one of the best on the market. It is made from lightweight and strong aluminum, which makes it superior in terms of functionality.

In addition, its smooth radius edges ensure increased safety for you and those around you. Plus, all holes are pre-countersunk so that you can easily install it on your bike. Lastly, it comes with your choice of Guide Wheel.

It features high-quality ABEC 7 Bearings for a smooth and quiet ride at all speeds. There is little or no friction, making it easy to pedal your motorized bicycle.

2. Chain Tensioner for Motorized Bicycle

Best Motorized Bicycle Chain Tensioners

A chain tensioner is a device that attaches to the bicycle’s rear hub and helps prevent the bike’s chain from slipping off during use.

This tool is necessary for motorized bicycles which have a continuously variable transmission (CVT) belt drive, or for bikes with derailleur gears that are used in hilly areas. A chain roller tensioner is an important part of the drivetrain on a motorized bicycle.

It ensures proper tension and alignment of the chain, which can prevent the chain from derailing, excessive wear of the sprocket, and prolonging the life of the chain. As such, it is an essential component for keeping your bike running smoothly.

If the chain on your motorized bicycle is not tensioned properly, it will eventually come off or break. In addition, the side cover and stator plate can be damaged by improper tensioning. The tensioner arm has 5 screws, 2 lock nuts, and 2 washers. Make sure to tighten everything securely for optimal performance.

There are many different types of chain tensioners on the market, but not all of them are created equal. When purchasing a chain tensioner, make sure to use small screws/bolts and lock nuts for the tension arm.

The new tension plate should be placed on the housing cover first and secured with 3 screws that are identical in size. Finally, connect the spring from the tensioner plate to the tensioner arm.

3. CNCMOTOK Spring Loaded Chain Tensioner fit for 49cc 66cc 80cc Engine Motorized Bike

Best Motorized Bicycle Chain Tensioners

This chain tensioner is made of high-quality materials and is designed to be durable and long-lasting. It is thicker than most other chain tensioners on the market, making it less likely to bend or deform.

This chain tensioner is perfect for motorized bikes that use a chain drive. It mounts right to the motor and is adjustable to fit different applications, whether they are gas or electric. Additionally, this kit includes everything you need to keep your chain tight and running smoothly.

This motorized bicycle chain tensioner is perfect for those who want an easy ride. It is made with durable metal and has a sturdy construction, meaning it can handle the wear and tear of everyday use.

Plus, it comes with a spare spring chain guide wheel and spring, so you can always be prepared for the unexpected. And if you have any questions or problems, our team of experts is here to help.

4. sthus Black Spring Loaded Chain Tensioner For 49cc 66cc 80cc

This chain tensioner is manufactured by Sthus and is compatible with 49cc 66cc 80cc engine motorized bikes. It mounts to the motor and has a wide range of adjustments for your bike. This package includes a set of tension rollers and springs, screws, nuts, and plates to align the chain properly.

This chain tensioner is a great option for those who want to keep their chain tight without the risk of it popping off.

The amount of tension can be easily adjusted to your liking, and it’s compatible with chain drive for gas motorized bicycles. It can be mounted in either the center or rear, depending on your kit.

This chain tensioner is a great option if you’re looking for a smooth, vibration-free ride. It also keeps the nylon tension wheel from wearing out, which can be important for keeping your motor running smoothly.

5. POSENG Chain Tensioner for Motorized Bicycle, Spring Loaded Chain Tensioner

This chain tensioner is designed for motorized bicycles with 49cc, 66cc, or 80cc engines. It is spring-loaded for easy use and has a wider range of adjustments than most tensioners. This kit includes a tensioner roller, spring, two metal plates and five screws.

The tension roller ensures chain alignment and prevents derailment or excessive wear of the sprocket. The chain roller is designed for use with gas motorized bicycles with center mount or rear mount chains.

The POSENG Chain Tensioner for Motorized Bicycle is a high-quality chain roller tensioner that is compatible with 49cc, 66cc, and 80cc engines. It is made of durable materials and is easy to install.

This chain tensioner is perfect for all chain drive applications- whether you have a center mount or rear mount set up.

Plus, it’s easy to install and comes with everything you need, including the motorized bike chain tensioner. If you do have any problems, don’t hesitate to contact us directly for a replacement or return.

How do motorized bicycle chain tensioners work?

Chain tensioners work to keep the chain from falling off of the wheel during use, especially when pedaling hard. This is because a stretched chain can cause the bike to lose power and even fall over.

Chain tensioners are necessary if you have vertical dropouts on your bike; that is if the frame doesn’t have slots that allow the axle to move up and down.

Bikes with horizontal dropouts will not need a tensioner, as its frame should be able to hold them in place without one. However, most bikes today come with vertical dropouts, including motorized bicycles – so a chain tensioner is often an essential part of the setup.

There are two types of chain tensioners: those that are built-in and those that must be purchased separately.

The built-in variety can be found on some cruiser bikes and all motorized bicycles; they’re usually made out of metal or plastic and look like small triangles or squares that fit into specially shaped slots on the frame near the rear wheel axle.

Chain tensioners work by pulling against either side of the chain as it runs over the sprocket. This tension keeps the chain taught and prevents it from slipping off of the wheel.

What are the benefits of using a motorized bicycle chain tensioner?

There are many benefits to using a motorized bicycle chain tensioner. Perhaps the most obvious benefit is that it keeps your bike’s chain properly tensioned, which reduces wear and tear on both the chain and your shifting system.

Additionally, by keeping the chain properly tensioned, you’ll enjoy smoother shifting and less hassle with derailleurs.

Another big advantage of using a motorized bicycle chain tensioner is that it allows you to convert your bike to a single-speed without too much difficulty. The process is simple and can be completed with minimal tools or experience.

So if you’re looking for an easy way to convert your bike to a single-speed, a motorized bicycle chain tensioner is definitely the way to go.

When Do you need a Bicycle Chain Tensioners Necessary

1. During Multi-Speed to Single-Speed Conversions

When you convert a multi-speed bike to a single-speed, you remove one or more gears from the drivetrain. This leaves the chain with more slack than it had before the conversion.

A chain tensioner is an essential part of a single-speed conversion kit because it restores the tension in the chain that was lost when you removed those gears.

A chain tensioner is necessary for single-speed conversions, but not necessary for multi-speeds. Multi-speed bikes typically have enough built-in tension to keep the chain from becoming too loose.

A chain tensioner prevents slacking and vibrations, which improves cycling comfort and safety of doing it.

2. When the Chain is Long or Loose

When a bike’s chain is too long, it can create slack in the chain and cause it to come off. If your bike has excessive slack in the chain, you may need a chain tensioner to remove excess slack and keep the chain on the bicycle.

Similarly, if your bike’s chain is too loose, you may also need a chain tensioner to keep it tight. In either case, using a chain tensioner can help improve the performance of your bike chains and drivetrain.

3. If You Intend to Ride Long-Term Daily

If you’re someone who plans on riding their bike long-term on a daily basis, it’s worth getting a chain tensioner. This will help keep the axle in place and reduce wear and tear on your drivetrain.

They’re not expensive, so it’s a worthwhile investment to make if you plan on using your bike frequently.

4. If You Like Pedaling Hard

If you’re the type of cyclist who likes to pedal hard, then you’ll need a chain tensioner. Chain tensioners come in handy when you switch to single-speed riding. This is because as you pedal harder, the chain stretches and becomes loose.

Without a chain tensioner, your bike will not run smoothly and may even fall apart. Chain tensioners are necessary for converting multi-speed bikes into single-speed bikes with vertical dropouts.

If the chain is too long, too old, or if you pedal hard, then a chain tensioner is a must. A chain tensioner is unnecessary if the bike has horizontal dropouts or is new; however different types of bikes have different needs when it comes to chain tensioners

5. Chain Tensioners Extend the Life of The Chain and Other Components

A chain tensioner lets you shift the bike quickly and easily. When properly used, a chain tensioner can also improve the life of a chain, allowing it to last longer in use. Chain tensioners are necessary for single-speed bikes.

They are also necessary for converting multi-speed bikes into single-speed, especially those with vertical dropouts. If the chain is too long or if you pedal hard, cycle daily, or want to extend the life of the chain, one must use a chain tensioner.

Bicycle chains are only necessary if the frame has dropouts that go horizontal. Chain tensioners work by providing mechanical resistance to any slack in a chain, which helps keep it tight on the sprocket rings.

There are many different types of chain tensioners; they come in three types: motorized, single speed, and mechanical

How do you install a motorized bicycle chain tensioner?

Installing a motorized bicycle chain tensioner is not as difficult as it may seem. In fact, with a little patience and some basic tools, you should be able to do it in no time at all.

The first step is to remove the axle nut from the drive side of your bike. This can be done by using a wrench. Once this is done, you will be able to install the chain tensioner.

Be sure that when installing the tensioner, you do not tighten too much or loosen too much on either eyelet as it may break. The fenders are lightweight and save the rider from unnecessary weight, so it’s important not to overtighten them.

What are the things to consider when choosing a motorized bicycle chain tensioner?

When it comes to motorized bicycle chain tensioners, there are a few things you need to consider before making your purchase. The first thing you’ll need to decide is which type of tensioner is best for your bike.

There are several different types available on the market, so it’s important to do your research and find the one that fits your needs.

Another thing you’ll need to take into account is whether or not your bike has vertical dropouts. If it doesn’t, then you’ll need a different model that can prevent the rear wheel from slipping when the bike isn’t in use as a single-speed.

The Arch tensioner is a great option for those with vertical dropouts, as it’s affordable and easy to install. However, some people have complained about its durability – the bearings tend to wear out quickly.

If you’re looking for a more reliable option, then the Duluth Cycle spring tensioner might be right for you. It can be tricky to set up at first, but once it’s properly adjusted, it will provide years of smooth shifting and vibration-free riding. Just keep in mind that this tensioner is heavier than most others on the market.

This is a good choice for those who are new to motorized bicycles, as it’s relatively easy to install and doesn’t require any special tools. However, it’s important to note that the spring tensioner can be less reliable than some of the other models available.

So, what should you consider when choosing a motorized bicycle chain tensioner? First, decide which type of tensioner is best for your bike; then make sure your bike has vertical dropouts.

Finally, consider how often you’ll need to use the tensioner and whether or not the price is worth it. With so many options available on the market, there’s definitely one that will fit your needs.


We hope you found the best motorized bicycle chain tensioner for your needs from our list of 5. If you have any questions or would like to share your experience with us, please subscribe to our mailing list. We love hearing from our readers.

Anna Stones