Best Bike Bottom Bracket [Review] in 2020
Last Updated on July 28, 2020
This guide has been written by Cycle expert Alex Bristol
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Bike bottom bracket is that part which connects the crank set to the bike. This part allows the crank set to rotate easily. This part has a spindle that connects the bearings to the bearings and the crank set. 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. In case the bottom bracket in your bike is worn out, you may start hearing some sounds when riding, you may need to check the condition of the bottom bracket. 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
Top Choice Item
In terms of performance, durability and design, Wheels MFG BB86/92 is undoubtedly among the best. 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. Don’t forget that it comes with a lifetime warranty which means that it will give you the best value for your money.
Made in the United States
Latest deal: Wheels MFG
Shimano Dura-Ace BB-R9100 Bottom Bracket
Prime Picked Item
The most impressive thing about Shimano Dura-Ace BB-R9100 Bottom Bracket is that it uses Hollowtech II that works perfectly with 24 mm axle 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. Other features include; anodized bearing cups and small bearings which reduces its weight.
Strong and rigid
3 years warranty
Latest deal: Shimano Dura-Ace
Shimano Tourney TX BB-UN100 Cartridge Bottom Bracket 68/122.5mm OEM
The Shimano Tourney Bottom Bracket is one of the sturdiest brackets available on the market which are built to last. It features a BSA (BC 1.37) shell and stainless steel ceramic bearings which are sealed. Additionally, it has screwed mounting compatibility which means that it is very strong offering a shaft length of 122.5mm (D-NL). 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 bike, road bikes, gear bikes among other types of bikes.
Easy to maintain
It comes with 2 screws to strengthen the bearings
Latest deal: Shimano Tourney TX BB-UN100
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 bikes taper crank sets. Unlike others, this one is one of the most durable bottom bike brackets since it lasts for up to 15 years.
Lasts for up to 15 years
Easy to maintain
Aluminum left hand cup
Latest deal: Shimano BB-UN55
SRAM GXP Team Bottom Bracket
Best Value Item
If you are you searching for a durable bottom bracket that you can use with TruVatic GXP and SRAM crank sets, SRAM GXP might be exactly what you need. 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.
It enhances smooth riding
Lasts for 2000-4000 miles
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 drag-free riding experience. Unlike others, 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 measures 70 mm or 658 mm. In addition, it uses two steel cartridge bearings that are attached in the composite cups.
Labyrinth seals enhance durability in wet areas
Latest deal: Shimano Ultegra
VGEBY1 Bottom Bracket
VGEBY1 Bottom bracket is made of stainless steel to boost durability. 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 BB tool to install. The steel shell helps to absorb roundness tolerance that comes from the valve ports of the bottom bracket.
Made of stainless steel for durability
High quality product
Integrated system protects the frame
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, they also enhance better rotation. The other thing you will love about it is the 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 a great option.
Easy to install
Latest deal: Shimano Deore
Fuerdi VP-BC73 English Square BB
Whether you are searching for an effective bike bottom bracket for your road racing bike or mountain bike, Fuerdi VP-BC73 is a top quality product you should consider. It has a great length for both single speed bikes and fixie. Additionally, it has a phosphate cups anodized sheath. The package includes 2 waterproof screws and one sealed bottom bracket. You should also note that it weighs 280g and measures 68 X118 mm.
Features metal cups on the two ends
You have to lubricate it
Latest deal: Fuerdi VP-BC73 English Square BB
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.
Content Manager at Pedallers
Alex is a cycling expert at and focuses on reviewing bikes, accessories, and general cycling. She searches for the most up to date products that match the needs of cyclists across the world. Whether it's recent news or the best bike set-ups, Alex is a trusted source for anything around cycling.