Best Bike Bottom Brackets for BMX Bikes of 2025

Jason Kiser Avatar
Jason Kiser
Last Updated: Jan 5, 2025

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Bike bottom brackets for BMX bikes are an essential component for any serious rider. They provide a smooth and durable connection between the frame and the cranks, allowing for efficient power transfer and a smoother ride. Bottom brackets come in a variety of sizes and styles, including sealed bearings and traditional cup-and-cone designs. Some high-end models even feature ceramic bearings for improved performance and longevity. Whether you're a casual rider or a seasoned pro, investing in a quality bottom bracket is a smart choice for any BMX enthusiast.

At a Glance: Our Top Picks

Black Ops BMX Bottom Bracket Set Cover #TOP 1
Black Ops BMX Bottom Bracket Set
ftb score rating icon 9.8
Black Ops BMX Mid/USA Dualie Bicycle Bottom Bracket Set Cover #TOP 2
Black Ops BMX Mid/USA Dualie Bicycle Bottom Bracket Set
ftb score rating icon 9.7
POLSO Euro BB BMX Bike Bottom Bracket Cover #TOP 3
POLSO Euro BB BMX Bike Bottom Bracket
ftb score rating icon 9.5

Top 8 Bike Bottom Brackets for BMX Bikes

#TOP 1

Black Ops BMX Bottom Bracket Set

Bottom Bracket Set Black
Black
Black Ops BMX Bottom Bracket Set Cover
Black Ops BMX Bicycle Bottom Bracket Set

The Black Ops BMX Bottom Bracket Set, also known as the Black Ops BMX Bracket, is a high-quality bike component that offers durability and convenience. With its press fit design, this bottom bracket ensures a secure fit for your bike's crank system. It is specifically designed for one piece cranks, providing compatibility and ease of installation. The sealed mechanism keeps out dirt and debris, enhancing the longevity of your bike's bottom bracket. Additionally, the Black Ops BMX Bracket features a cup OD/bearing OD of 51mm, ensuring a smooth and reliable performance. Trust the Black Ops brand for top-notch quality and reliability when it comes to bike components.

What We Like
Durable
Easy installation
Sealed mechanism
#TOP 2

Black Ops BMX Mid/USA Dualie Bicycle Bottom Bracket Set

Mid/USA Dualie BB
19mm
Black Ops BMX Mid/USA Dualie Bicycle Bottom Bracket Set Cover
Black Ops BMX Mid/USA Dualie Bicycle Bottom Bracket Set

Get ready to upgrade your bike's bottom bracket with the Black Ops Dualie BB Set. This high-quality bottom bracket set is compatible with both American and Mid style BB shells, making it a versatile choice for any bike. The press-fit bottom bracket cups come with sealed bearings, ensuring a smooth ride and keeping dirt and debris out of the mechanism. With a weight of only 255g, this bottom bracket set won't weigh you down. Plus, the cup OD/Bearing OD of 41mm or 51mm and spindle type of 19mm make it easy to install on your bike. Choose the Black Ops Dualie BB Set for a durable and reliable upgrade to your bike's bottom bracket.

What We Like
Compatible with both American and Mid style BB shells
Sealed bearings keep out dirt and debris
Lightweight at only 255g
#TOP 3

POLSO Euro BB BMX Bike Bottom Bracket

POLSO
Black
19MM
POLSO Euro BB BMX Bike Bottom Bracket Cover
POLSO Euro BB BMX Bike Bottom Bracket Bike Parts BB for BMX Bike, 19MM, Black

The POLSO Euro BB is designed for BMX bikes with press-fit EURO bottom bracket frames. It accommodates 19mm crank spindles, ensuring compatibility and ease of installation. You will appreciate the included assortment of spacers, which help optimize the chainline and crank clearance, giving you a smoother ride. This bottom bracket not only enhances performance but also simplifies adjustments, allowing you to tailor your bike setup for the best possible experience on the track or trails.

What We Like
Compatible with 19mm crank spindles
Includes spacers for adjustments
Designed for press-fit EURO frames
Improves bike performance
#TOP 4

KHE BMX Bottom Bracket US BB for 19 mm Axles Industrial Bearing with Adaptor

KHEbikes
M350118
Black
US BB
KHE BMX Bottom Bracket US BB for 19 mm Axles Industrial Bearing with Adaptor Cover
KHE BMX Bottom Bracket Bottom Bracket US BB for 19 mm Axles Industrial Bearing with Adapter

KHE BMX Bottom Bracket is a high-quality bike bottom bracket made by KHEbikes. It is designed for 19mm axles and comes with an adaptor. The total weight of this product is only 0.54lbs, which makes it lightweight and easy to install. It also includes 6 washers that can help you adjust the height of the bracket. The industrial bearing ensures smooth rotation and improves the efficiency of your ride. With KHE BMX Bottom Bracket, you can enjoy a comfortable and stable ride without worrying about the wear and tear of your bike.

What We Like
Lightweight
Easy to install
Smooth rotation
#TOP 5

Fenix BMX Euro Bottom Bracket Cup/Bearing Set, 19mm

607428
Black
Fenix BMX Euro Bottom Bracket Cup/Bearing Set, 19mm Cover
Fenix BMX Euro Bottom Bracket Cup/Bearing Set, 19mm

The Fenix BMX Bottom Bracket Set is a high-quality and reliable product designed for bike enthusiasts. This set includes Euro cups and bearings, as well as tube spacers and spindle washers, providing you with all the necessary components for your bike's bottom bracket. The Euro cups and bearings ensure smooth and efficient rotation, allowing you to enjoy a seamless riding experience. The tube spacer and spindle washers help to properly align and secure the bottom bracket, ensuring optimal performance and durability. With the Fenix BMX Bottom Bracket Set, you can confidently tackle any terrain and ride with ease, knowing that your bike's bottom bracket is equipped with top-notch components.

What We Like
High-quality
Smooth rotation
Optimal performance
#TOP 6

Jet BMX Mid BB 22mm

Jet BMX
SG13088
Black
22mm
Jet BMX Mid BB 22mm Cover
Jet BMX Mid BB Bottom Bracket / 22mm

The Jet BMX Bottom Bracket is designed to enhance your biking experience with its high-quality components. It features two precision sealed bearings that help ensure smooth rotation, reducing friction and wear during rides. The included center spacer and aluminum cone spacers provide a secure fit, making installation straightforward and hassle-free. Additionally, spare washers are included, allowing for easy adjustments as needed. With options for either 19mm or 22mm inner diameter bearings, you can choose the best fit for your bike, offering versatility and convenience for all riders.

What We Like
Smooth rotation
Easy installation
Versatile size options
Durable materials
#TOP 7

CYCLEZ 5/16 x 12 Bottom Bracket Bearings

Silver
5/16"x12
CYCLEZ 5/16 x 12 Bottom Bracket Bearings Cover
CYCLEZ 5/16 x 12 Premium Bicycle Bottom Bracket Bearings for Beach Cruisers, BMX, Lowrider Bikes or 1-Piece Cranks Replacement Bearings, Made in USA Set of 2

The CYCLEZ Bottom Bracket Bearings are designed to enhance your biking experience. Each set features two retainers, each containing 12 high-quality 5/16" ball bearings. This precision engineering ensures smooth rotation and minimizes friction, leading to a more enjoyable ride. With an outer diameter of 44mm and an inner diameter of 31.4mm, these bearings are perfect for most single-piece cranksets. They serve as an ideal replacement for worn or damaged bearings, offering you a low-maintenance solution that lasts longer, keeping your bike in top shape.

What We Like
Smooth rotation
Reduced friction
Easy replacement
Long-lasting performance
#TOP 8

Juscycling Replacement Ball Bearing Cages

220330
Juscycling Replacement Ball Bearing Cages Cover
Pack of 2 Replacement Ball Bearing Retainer Cages for BMX Bottom Bracket Crankset Service, 5/16” X 12 Balls

The Juscycling Bearing Retainer Cages are essential for maintaining your BMX bottom bracket. These cages, designed for 5/16” X 12 ball bearings, ensure a perfect fit for your bike. Made from durable carbon steel, they offer strength and longevity. Additionally, they come pre-lubricated to resist corrosion, which helps them last longer. For optimal performance, you can add extra lubricant during installation. These cages can also replace loose bearings, providing a reliable solution for your needs.

What We Like
Durable carbon steel construction
Pre-lubricated for longevity
Compatible with loose bearings
Pack of two for convenience
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What bottom bracket do I need BMX?

Most BMX cranks are 19mm, 22mm or 24mm so if your frame has a MID Bottom Bracket and you Cranks have a 19mm axle, you need a MID 19mm Bottom Bracket. Another example would be if your frame has a Spanish Bottom Bracket and your cranks have a 22mm axle, you need a Spanish 22mm Bottom Bracket.

2. Are BMX bottom brackets universal?

BMX frames are made in a variety of sizes and shapes and the tubing where the bottom bracket fits is no different.

3. Will a BMX bottom bracket fit a MTB?

Most MTB frames with press-fit bottom brackets are also incompatible with BMX bottom brackets due to the non-matching inner shell diameters. An MTB bottom bracket shell with a 34mm inner diameter.

Editor's Notes

During our bike bottom bracket for bmx bikes research, we found 24 bike bottom bracket for bmx bikes products and shortlisted 8 quality products. We collected and analyzed 5,513 customer reviews through our big data system to write the bike bottom brackets for bmx bikes list. We found that most customers choose bike bottom brackets for bmx bikes with an average price of $18.06.

The bike bottom brackets for bmx bikes are available for purchase. We have researched hundreds of brands and picked the top brands of bike bottom brackets for bmx bikes, including Black Ops, POLSO, KHEbikes, Fenix Cycles, Jet BMX. The seller of top 1 product has received honest feedback from 348 consumers with an average rating of 4.7.

Written by
Jason Kiser Avatar

Jason Kiser is an editor who lives in California, he previously worked in a travel agency for ten years, which enabled him to travel a number of interesting countries and experience several different cultures along the way. His range of job and travel experiences grant him expertise in hiking, camping, outdoors and fitness.