Best Bike Bottom Bracket

By: Mason Arnold

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Check out the results fast – here are our review winners

Wheels MFG BB86-OUT
Shimano Dura-Ace BB-R9100

If you’re looking to upgrade your favorite bike what better way to start than at the heart? The bike bottom bracket sits within the heart of all your key components in your bike, they should be seen and not heard.

The bike bottom bracket is that part which connects the crankset to the bike. This part allows the crankset to rotate easily. This part has a spindle that connects the bearings to the bearings and the crankset.

These units may not seem to be very important parts of a bike but they play a huge role in terms of energy transfer. Without them, you may not be able to pedal your bike comfortably. If it starts to get worn out and starts making noises then you should consider replacing it.

In an ideal world, there would be just one standard bottom bracket but as the cycling world and technology advances, you find yourself getting stuck for choice on which one to pick, making what should be an easy job more challenging. 

But not to worry, I’m here to help.

In this article together we will look at the best bottom bracket for any riding style, whether that’s mountain biking, road biking, or BMXing. I’ll get you riding in no time. 

Below are the best bike bottom brackets that are worth your money.

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Best All Round Bike Bottom Bracket For Cycling

Wheels MFG BB86/92 Shimano Bottom Bracket

In terms of performance, durability, and design, Wheels MFG BB86/92 is undoubtedly among the best therefore making it to the top of my list.

To start with, it features two machined aluminum cups that are thread together to guarantee stability. This design also prevents creaking and instead, it provides a very smooth operation as compared to others.

But that’s not all.

It has serviceable, double lip sealed Enduro bearings. This along with the aluminum cups mean that this bottom bracket is super durable and ready for any bike!

Don’t forget that it comes with a lifetime warranty which means that it will give you the best value for your money.

  • Unmatched performance
  • Excellent design
  • Made in the United States
  • Lifetime warranty
  • Slightly expensive
Latest deal: Wheels MFG

Shimano Dura-Ace BB-R9100 Bottom Bracket

best road bike bottom bracket

Now Shimano is one of the most well-known companies in the cycling world for their components on bikes, such as cassettes, chains, wheels, accessories, and more so if you’ve been into cycling for a while now you’ll be sure to have heard of Shimano.

I cannot wait to tell you about their bottom bracket. 

The most impressive thing about Shimano’s Dura-Ace BB-R9100 Bottom Bracket is that it uses Hollowtech II that works perfectly with 24 mm axle bearings, with anodized bearing cups and small bearings.

As a result, it has a good balance of rigidity, strength, rotation efficiency, and weight.

It is suitable for road cycling and the good thing is that it comes with a 3 years warranty. 

This is a super great bottom bracket for the price point go check out the glowing reviews.

  • Aluminum cups
  • Fits perfectly
  • Strong and rigid
  • 3 years warranty
  • None
Latest deal: Shimano Dura-Ace

Shimano Tourney TX BB-UN100 Cartridge Bottom Bracket 68/122.5mm OEM

Now this one is one of the best for studiest brackets which are built to last, the Shimano Tourney is one of the best.

Featuring a BSA shell and stainless steel ceramic bearings that are sealed. Additionally, it has screwed mounting compatibility which means that it is very strong offering a shaft length of 122.5mm.

But that’s not all.

The reason this bottom bracket from Shimano made our list is down to the fact that you will love that it is easy to maintain and also durable.

It is suitable for mountain bikes, road bikes, gear bikes among other types of bikes, this is one of the best, go have a look.

  • Durable construction
  • Lightweight design
  • Easy to maintain
  • It comes with 2 screws to strengthen the bearings
  • None
Latest deal: Shimano Tourney TX BB-UN100

Shimano BB-UN55

best mountain bike bottom bracket

One of the most outstanding things about Shimano BB-UN55 is that instead of using a plastic material, it has an aluminum left-hand cup.

Additionally, it comes with a high-quality spindle and sealed bearings to boost durability. This also means that it is very easy to maintain. It is a great option for mountain bike taper cranksets.  

Unlike others, this one is one of the most durable bottom bike brackets since it lasts for up to 15 years.

This is such a great deal for the price point ready for traditional chainsets for smooth operation and durability while still remaining super lightweight.

Go check them out.

  • Lasts for up to 15 years
  • Easy to maintain
  • Sealed bearings
  • Aluminum left hand cup
  • None
Latest deal: Shimano BB-UN55

SRAM GXP Team Bottom Bracket

If you are searching for a durable bottom bracket that you can use with TruVatic GXP and SRAM cranksets, SRAM GXP might be exactly what you need.

This crankset is engineered with the right materials for the application, including sealed cartridge

But that’s not all.

This one provides a wonderful performance irrespective of the construction or thread irregularities on the frame.  You should also note that it has sealed bearings that prevent dirt and water. As a result, it is very easy to maintain.

This will be a great feature on your bike and you definitely need to check it out. 

  • It enhances smooth riding
  • Lasts for 2000-4000 miles
  • Lightweight
  • Excellent performance
  • Not the best quality
Latest deal: SRAM GXP

Shimano Ultegra SM-BB72-41B PressFit

Shimano Ultegra SM-BB72 is one of the best bottom brackets that provide a drag-free riding experience like no other. It uses silky smooth bearings and an advanced sealing.

It also comes with a shell that has a measurement of 86.5 mm which is a great thing since most of the road bike shells measure 70 mm or 658 mm.

In addition, it uses two steel cartridge bearings that are attached to the composite cups.

What does this mean for you? 

It means that this bottom bracket is built for durability even in the wettest of conditions, you’ll be riding without the worry with this bracket go have a look now.

  • Labyrinth seals enhance durability in wet areas
  • Fits perfectly
  • Inexpensive
  • Smooth running
  • None
Latest deal: Shimano Ultegra

VGEBY1 Bottom Bracket

VGEBY1 Bottom bracket is made of stainless steel to boost durability that’ll serve time even in the toughest of conditions. It is lightweight and works well on 80/100 mm frame shells.

Unlike others, this one features an integrated system which protects the frame. In terms of installation, it is very easy to put it in place since it only has two screws.

However, you will need a BB tool to install. The steel shell helps to absorb the roundness tolerance that comes from the valve ports of the bottom bracket.

It is more practical than any other bottom bracket, the shell can absorb roundness tolerance for the valves ports of the bracket bottom.

Overall this is such a great product for the price point, go check it out.

  • Made of stainless steel for durability
  • High quality product
  • Lightweight
  • Integrated system protects the frame
  • None
Latest deal: VGEBY1 Bottom Bracket

Shimano Deore XT M8000

This one has a very advanced design since it has a modern bearing and seal design. It features small ball bearings which apart from minimizing friction, also enhance better rotation.

The other thing I love about the product is that has improved seals to prevent dirt and mud.

As a result, it does not wear out easily. If you are searching for a high-quality bottom bracket that comes with an affordable price, this one will be the best option.

  • Great quality
  • Lightweight
  • Easy to install
  • Silky smooth
  • None
Latest deal: Shimano Deore

Looking for the best clip-on mudguards instead?

We’ve put an in-depth guide together for that.

We have looked over 13 clip-on mudguards to make sure you’re getting the best for your money. We looked at safety, length, tire fit, and ease of installation to make sure we’ve found the greatest products available to buy – you can see the full guide here which will be more relevant than the one you’re reading now.

Factors to consider when buying bike bottom brackets

Below are some of the things you should consider when buying a bike bottom bracket.

Compatibility– You should note that bike bottom brackets do not work with any bike. Most of them are designed to work with specific types of frames. When buying, you need to check the instructions from the manufacturer to determine whether they will work with the type of bike you have.

Price– You do not need to worry about the cost of these units because most of them are very cheap. However, you need to check the quality of the materials used to determine whether you have purchased the right product.

Reviews– If you are searching for a product that will give you the best value for your money, you should avoid buying without checking the reviews. It is advisable you check the product details on various sites like Amazon to see what customers are saying about it.

Brand– When it comes to bike accessories, the best way to ensure that you are purchasing a quality product is by considering only those that comes from a reputable brand. Shimano is among the most popular brands.

Material – Today you can easily find bottom brackets that are made of very hard materials. Instead of the usual steel, bottom brackets are made of hard ceramic to boost durability.

Below are the common types of bottom brackets.

Threaded Bottom Brackets These ones are available in different versions. The cheaper or the older versions use bearings that are located inside the frame. They also have an axle where you tighten the crank arms. Square taper bottom bracket is the most popular type of threaded bottom bracket.  You will also find that most of that advanced threaded bottom brackets come with a 3-piece design. Some are characterized by large diameter bearings which are placed on the outer shell of the bottom bracket. They have an axle that is permanently fixed on one of the crank arms thread. One of the major benefits of this type is that the bearings have a larger diameter which means that they last longer. They also enable the axle to be lightweight.

Press-fit bottom brackets These ones do not need the frame to have a threaded shell. As a result, they are very popular with many manufacturers. One of the most impressive things about them is that they allow manufacturers to create frames that do not need tough inserts where the bearings sit.

Are bearings important in press-fit bottom brackets?

The bearings are very important because they determine the amount of energy that is lost through friction. They also enable the bottom bracket to last longer. If possible, you should look for a sealed cartridge bearing though they are a bit expensive. High- end bottom brackets contain bearings which provide higher tolerance. This means that they are highly effective in minimizing friction. As a result, these units are the most durable.

Where is the bottom bracket located in a bike?

The bottom bracket is usually located inside the bottom bracket shell of the frame. It is that part that connects the chainset and the frame.

How do you take care of bottom brackets?

Just like any other part of the bike, bottom brackets should also be taken care of to boost their performance and durability. For example, if you have a threaded bottom bracket, you should remove it regularly and then check the anti-seize compound which ensures that it does not get stuck permanently.

Irrespective of the type of bottom bracket you have installed, you should check the bearings as many times as possible to ensure that they are functioning properly. Another way of boosting the durability of these units is by cleaning your bike frequently. However, you should avoid spraying high-pressure water around the bottom bracket because water may penetrate the seals and compromise the quality of the bearings.

When it comes to installation, you need to ensure that you are using the right tools. Each type of bottom bracket requires a special tool. In case you do not have the necessary tool for installation, you can take the bike to the nearest bike shop.

The Final Verdict

One of the most important parts of a bike is the bottom bracket. The major function of bike bottom brackets is that they allow the crankset to rotate freely. Due to this, this part makes your work easier when pedalling. After using the bike for some time, you may need to replace the bottom bracket this means that you will have to purchase one that matches with your bike. Choosing the best bike bottom bracket can be a bit challenging considering that most of these products have a similar design.

If you are still confused about which product you should buy, you can pick any of those we have reviewed. They are all top-rated on Amazon and the good thing is that they are made of quality materials. Due to this, you are sure that whichever you pick will serve you for many years. If the price is a major concern, you will be happy to find that most of the products we have reviewed are very cheap.