Best Bottom Bracket for Mountain Bikes

There are some road bike and mountain bike components that have bigger tasks than a bottom bracket, but this doesn’t mean that it’s not important.  The bottom bracket is a vital part that contributes to the pedaling power of a cyclist.  It is considered the core of the bike frame.  

Since it is said to be the core of the frame, it is important that you get hold of the best bottom bracket.  Having a reliable bottom bracket will allow the cranks to spin efficiently on a balanced and well-secured bearing interface.  

Just like the hubs, chainrings and cassettes, which are all rotational parts of a road bike or a mountain bike, the bottom bracket is equally functional and is not likewise exempted from getting exposed to contaminants and extreme pressures due to arduous landings. 

The design of the bottom bracket is a conciliation of these 3 elements: frame-specific packaging, low-frictions bearing integration, and environmental sealing.  Having an excellent group set does not count if your cranks do not spin smoothly.  So, if you want your biking experience to be smooth, get the best bottom bracket!  

Best Bottom Brackets for Mountain Bikes

Chris King Threadfit
Chris King Threadfit*
by Chris King

The ceramic and stainless steel bearing of the Chris King Threadfit bottom bracket weighs 89 grams. 

Pros

  • It is exceptionally durable.
  • It offers smooth and reliable performance.  
  • It has an unmatched bracket bearing quality manufacturing and control.

Cons

  • The service bracket tool is exclusive to Chris King.   

If you are eyeing for a bottom bracket that is long-lasting, the Chris King brand is what you need.  Chris King used to produce high-quality bike frames and has been creating the best groupsets and hubs since 1976.  Its bottom bracket also exhibits a similar quality.  

This bottom bracket is considered a luxury as it costs much, but investing on this is really worth it.  It may actually even last longer than your bike frame.  

The way the Chris King bottom bracket was manufactured by rigorous labor is what makes it precise, durable, and high performing.  So, if you make this bottom bracket a part of your bike, you will definitely feel its efficiency and smoothness all throughout your every ride.  

As compared to its competitors, the factory of Chris King in Portland produces its own brand of bearings to make sure they all possess incomparable quality.   

The Chris King bottom bracket is available in 9 colors and it offers a lifetime warranty.  You also have the option to choose the ceramic bearing, but expect it to be 2 times the value of the standard steel model.

 Price: USD 239.28 Check Price*
Price incl. VAT., Excl. Shipping
Wheels Manufacturing Threaded Bottom Bracket
Wheels Manufacturing Threaded Bottom Bracket*
by Wheels Manufacturing, Inc.

If you are always into heavy weather riding, the bottom bracket by the Wheels Manufacturing is perfect for you.  This bracket bearing is made from chromium and weighs 106 grams.  

Pros

  • It boasts durability.
  • Its Enduro bearings and sturdy environmental sealing is a perfect combination.
  • It has a reasonable price.  

Cons

  • Wheels Mfg is heavier as compared to the Chris King bottom bracket.

If you’re more of a rugged and adventurous cyclist, there’s no doubt that this is going to be the best bottom bracket for you.  

Two major things that differentiates this bottom bracket from its competitors include its Enduro bearings as well as its environmental sealing, which is made up of Enduro silicone that is capable of protecting it from contaminants.

 Price: USD 103.21 Check Price*
Price incl. VAT., Excl. Shipping
Hope Threaded Bottom Bracket
Hope Threaded Bottom Bracket*
by Hope

Are you in search of a bottom bracket that is mud-proof?  Well, I present to you the Hope Threaded bottom bracket.  This bracket bearing is made of stainless steel and weighs 100 grams.  

Hope’s British-made bottom brackets are designed, prototyped and manufactured in the town of Barnoldswick, England.  Its bearings are double sealed, wherein they are coated with a non-contact labyrinth on the outside, while O-rings is responsible for sealing the inside.   

More than the complete and impressive double seal feature, this bottom bracket from Hope is also in close contact with the axle of the crankset, which contradicts the existence of spacers or shims.  This further reduces difficulty as well as possible issues on maintenance. 

Pros

  • This bottom bracket can be used all year round no matter the weather and the road conditions are because it is meticulously sealed.  
  • It excels in terms of durability.  
 Price: USD 119.50 Check Price*
Price incl. VAT., Excl. Shipping
CeramicSpeed Mountain Bike Bottom Bracket
CeramicSpeed Mountain Bike Bottom Bracket*
by CERAMICSPEED

As the name suggests, this bottom bracket has a ceramic material.  Many cyclists opt for this brand because of its unparalleled performance.  However, it’s a bit costly.

Pros

  • CeramicSpeed is equipped with enduring ceramic bearings.
  • It produces low friction.

Cons

  • This ceramic bottom bracket is an expensive brand.

If you don’t want to consume your energy to its limits and, at the same time, you want to maximize the usage of your bottom bracket, then you might as well settle for the CeramicSpeed.  

The use of ceramic bracket bearing and tailored steel races can dramatically lessen the drag by half as compared to bottom bracket with standard design.  With drag reduction, the transfer of power will be more efficient and that you will have an enhanced pedaling performance.

Prime  Price: USD 459.00 Check Price*
Price incl. VAT., Excl. Shipping
CeramicSpeed Mountain Bike Bottom Bracket
CeramicSpeed Mountain Bike Bottom Bracket*
by Cane Creek

As the name suggests, this bottom bracket has a ceramic material.  Many cyclists opt for this brand because of its unparalleled performance.  However, it’s a bit costly.

If you don’t want to consume your energy to its limits and, at the same time, you want to maximize the usage of your bottom bracket, then you might as well settle for the CeramicSpeed.  

The use of ceramic bracket bearing and tailored steel races can dramatically lessen the drag by half as compared to bottom bracket with standard design.  With drag reduction, the transfer of power will be more efficient and that you will have an enhanced pedaling performance.

Pros

  • CeramicSpeed is equipped with enduring ceramic bearings.
  • It produces low friction.

Cons

  • This ceramic bottom bracket is an expensive brand.
 Price: USD 299.99 Check Price*
Price incl. VAT., Excl. Shipping
Race Face Cinch BSA Threaded Bottom Bracket Black, 68/73mm
Race Face Cinch BSA Threaded Bottom Bracket Black, 68/73mm*
by Race Face

If you are looking for a reliable bottom bracket at a very reasonable price, then you might want to check the Race Face Cinch Bottom Bracket.  This has single row bracket bearings and weighs 87 grams.

Pros

  • It is available in a wide array of options.  
  • It is offered at a reasonable price.    
  • It is a durable bottom bracket. 

Many cyclists are willing to invest on costly bike parts, but there are also those who would prefer the reasonably-priced.   If you are one of those looking for a budget-friendly bottom bracket yet excels in durability, you would definitely settle for the Race Face Cinch bottom bracket.  

You are given a long line of bottom bracket options with regards to its sizes and standards.  The threaded version, which is the BSA, weighs 87 grams and can be purchased at a cheap price.

The Race Face bottom bracket bearings utilizes a 6806 retainer, which are wrapped with wiper seals and a waterproof grease so they could spin smoothly and continuously while preventing mud and dust from penetrating the inside. 

Prime  Price: USD 58.93 Check Price*
Price incl. VAT., Excl. Shipping
Easton Bottom Bracket 386 Evo
Easton Bottom Bracket 386 Evo*
by Easton

 

The Easton Bottom Bracket 386 Evo is the best bottom bracket that is ideal for wet weather.  It is made from stainless steel and weighs 103 grams.  

 

Pros

 

  • It is best for wet weather.  
  • It requires thinner grease.
  • Price is very reasonable.

 

The 386 Evo is the newest bottom bracket from Easton.  It has undergone a water subversion test for 24 hours and the result has proven that this bottom bracket is amazing even in bad weather.  

 

Easton has reconsidered the grease that it’s using to coat the bearings of the stainless steel bottom bracket.  It has been realized that applying a thinner layer of grease is better than applying thicker grease.  It delivers better protection as well as performance while on the road spinning. 

 Price: USD 59.99 Check Price*
Price incl. VAT., Excl. Shipping
ethirteen Components BSA Bottom Bracket Black, BSA, 68/73mm
ethirteen Components BSA Bottom Bracket Black, BSA, 68/73mm*
by e*thirteen by The Hive

If you have a tight budget, the E*Thirteen Threaded Bottom bracket is also worth a try.  It weighs 94 grams.  

Pros 

  • It is lightweight
  • It’s price is affordable
  • It is compatible with different types of bike.

This threaded bottom bracket works perfectly in almost all bike types and easily fits in the budget.  It is compatible with the T47 bb shell and likewise with the BSA bb shell. It makes use of custom bearings and seals that are of excellent quality.  

It can fit in cranks that measure 24mm or 30mm spindles and in frames with threaded bb shells measuring 100mm, 83mm, 73mm and 68mm.  You can avail of this bottom bracket if you have a road bike or a gravel bike frame that has a BSA shell that measures 68mm.

List Price: USD 77.95 You Save: USD 7.16 Prime  Price: USD 70.79 Check Price*
Price incl. VAT., Excl. Shipping
Last updated on December 20, 2021 at 10:39 am - Image source: Amazon Affiliate Program. All statements without guarantee.

Things to Consider When Looking for the Best Bottom Bracket

The rotating components of a bike are essential to profile because all these parts take part in achieving continuous and smooth rotations.  Cyclists are also conscious of the weight of each part.  The lesser the weight of a bike, the less energy you’ll consume.  

As for the bottom bracket, the bearing is more important than its rotation, which means that you need to check on its friction.  Make sure that the bottom bracket has a sturdy structure and less resistance while spinning. 

  1. Threaded Bottom Bracket

Bottom brackets come in numerous specifications as well as standards.  When choosing one, you automatically need to classify your bike, whether you have a threaded or a press fit.  

Threaded means that the bottom bracket has threads that you can screw into that should match the bb shell thread.  Conversely, press fit bottom brackets are simply inserted into the bb shell.

  1. Press Fit 

As compared to the threaded bottom bracket, the press fit is much easier to produce because it is only machine pressed.  This allows frame designers to come up with more desirable weight specifications that most cyclists would usually prefer.  

Also, a press fit bottom bracket does not require an aluminum insert, unlike the threaded. However, press fit bottom brackets are susceptible to screeching, which are caused by contaminants that can penetrate in the inside.  

Compatibility with the Crankset

There is also a need for you to consider if the bottom bracket is compatible with the crankset because other brands don’t always use similar axle standards, which includes the SRAM and Shimano.  SRAM uses 2 standards – the 29mm DUB axle and the 24/22mm GXP.  There is also the press fit 30 and the threaded bottom bracket 30, which several manufacturers likewise use.  Shimano, on the other hand, makes use of a 24-mm axle.  

Bearings

Threaded bottom bracket or press fit bottom bracket – whichever you prefer, the specification that you should be more concerned of are the bearings.  Remember, the bottom bracket handles most of the work when you stand on your pedals when descending on a rugged trail or when ascending on a steep road.  

Any of these situations can aggravate the bearings, and so you need to really choose a brand that can tolerate such heavy actions.  It is recommended that you go for a bottom bracket that has less friction as you will save more energy and prevent you from experiencing premature fatigue.  

Frequently Asked Questions About Bottom Bracket

What’s the difference between ceramic bearings and steel bearings?

Ceramic bearings cost more than steel bearings because they usually offer greater benefits to the cyclists.  This type of bearings also has less friction, which will help you save more energy while riding your bike.  On the other hand, steel bearings are heavier than ceramic, which obviously adds more weight to the bike.  

What’s the lifespan of a bottom bracket?

Cyclists live by a simple rule: “if it’s not broken, there’s no need to fix it”.  If you can perform maintenance regularly, then you’ll be fine.  If you keep the bike parts well-lubed, your bottom bracket will wear out only after riding for more than 4,000 miles.   

Are bottom brackets equipped with bearings?

The bottom bracket refers to the bearing system that is found between the cranks.  It is positioned inside the bb shell and is kept secured by a bracket cup or adaptor.  Then the 2 cranks are connected through a spindle and to the bearings. 

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By Paul P.

Paul Panha is an avid cyclist and sports performance enthusiast. Regularly on the road testing (and buying) new bikes. Paul is a co-owner of GetBike.fit and is the head resident author here.