Best Bike Bottom Brackets for Racing Bikes of 2026
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Bike bottom brackets are an essential component of any racing bike. They connect the pedals to the frame and allow for smooth rotation and power transfer. There are various types of bottom brackets available in the market, including threaded and press-fit options. Threaded bottom brackets are the most common and are easy to install and maintain. However, press-fit bottom brackets are gaining popularity due to their improved stiffness and weight savings. It's important to choose the right bottom bracket for your bike to ensure optimal performance and compatibility with your crankset.
At a Glance: Our Top Picks
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Top 10 Bike Bottom Brackets for Racing Bikes
Shimano SM-BBR60 Ultegra / FC-CX70 / 105 Bottom Bracket
The Shimano SM-BBR60 Bottom Bracket is 14 g lighter and 50% less friction than the SM-BB6700. With small ball bearings to reduce weight, the anodized bearing cups provide a smoother ride. This bottom bracket is recommended for Ultegra FC-R8000, FC-6800, 105 FC-5800, Metrea FC-U5000, FC-CX70, and is an excellent choice for bike enthusiasts.
SHIMANO Square Type Bicycle Bottom Bracket
This bottom bracket is designed to fit JIS square-taper cranksets. It is a durable and reliable option for bike enthusiasts looking to replace their current bottom bracket.
SHIMANO BB-UN300 Bottom Bracket
The SHIMANO BB-UN300 Bottom Bracket is designed for JIS square-taper cranksets and offers a spindle length of 113mm. It has a BB shell width of 68mm and a bottom bracket shell I.D. of 1.37, making it a great choice for many bike models. Please note that the crankarm fixing bolts are sold separately.
SHIMANO BB-RS501 Bottom Bracket
The SHIMANO BB-RS501 is designed specifically for English thread bottom bracket frames, ensuring a seamless fit with Hollowtech II 24mm crank spindles. This product features anodized aluminum cups, which provide both strength and lightweight performance, making it an excellent choice for cyclists who prioritize efficiency. Weighing in at just 93 grams, it helps keep your bike light and agile. By integrating perfectly with your crankset, the BB-RS501 enhances your bike's overall performance and durability, allowing you to enjoy a smoother and more reliable ride.
SHIMANO BB-MT501 English Bottom Bracket
The SHIMANO Bottom Bracket is a threaded bottom bracket designed for MTB use. It features an English (BSA) thread and is compatible with a Hollowtech II spindle. The bottom bracket is made with aluminum threaded cups and comes in black color. The English thread makes the installation process easier for you, while the compatibility with Hollowtech II spindle ensures a smooth ride. The aluminum threaded cups make the bottom bracket lightweight and durable, and the black color adds a sleek look to your bike.
Race Face Team X-Type BB Cups
BUCKLOS Bike Square Taper Bottom Bracket
Shimano Bb-Un300 Standard Bottom Bracket 73mm x 118mm
SHIMANO BB-UN300 Bottom Bracket
The SHIMANO BB-UN300 is designed to fit JIS square-taper cranksets, making it a reliable choice for your bike. You can easily install it with crankarm fixing bolts, which are sold separately. Its hollow spindle design not only reduces weight but also enhances performance, allowing for smoother pedaling. With a spindle length of 110mm and a BB shell width of 68mm, it provides the perfect fit for various bike frames, ensuring stability and efficiency during rides.
SHIMANO Square Type Bicycle Bottom Bracket
This bike bottom bracket is designed to fit JIS square-taper cranksets and comes with a shell width of 68mm and spindle length of 117.5mm. It ensures better chainline stability with chain line stabilizer. Crankarm fixing bolts are sold separately.
Frequently Asked Questions (FAQs)
1. Which bottom bracket is best for road bike?
Best road bike bottom brackets in 2021: the cream of the crop. Shimano Dura-Ace BB-R9100 Bottom Bracket.Chris King ThreadFit 24 bottom bracket.Wheels Manufacturing PF30 Angular Contact Bearing PF30 bottom bracket.Cane Creek Hellbender PF30 bottom bracket.FSA BB30 bottom bracket.Rotor BB30-24 converter bottom brackets.
2. Can you fit any bottom bracket on a bike?
What's tricky about threaded bottom brackets is that not all threaded bottom brackets are created equal, which means that different types of threaded bottom brackets can't just be swapped for other types. For example, two common threaded types are Italian or English.
3. Are bike bottom brackets universal?
However there are many different sizes and iterations according to manufacturer – BB30, PF30, BB90 ,PF86/92 to name but a few – and not all are interchangeable.
4. Does bottom bracket make a difference?
(Click here to read BikeRadar's complete guide to bottom brackets.) According to Friction Facts' latest report: “No statistically significant difference exists showing a general advantage or disadvantage of a standard type under similar loading conditions.
During our bike bottom bracket for racing bikes research, we found 24 bike bottom bracket for racing bikes products and shortlisted 10 quality products. We collected and analyzed 21,268 customer reviews through our big data system to write the bike bottom brackets for racing bikes list. We found that most customers choose bike bottom brackets for racing bikes with an average price of $19.15.
The bike bottom brackets for racing bikes are available for purchase. We have researched hundreds of brands and picked the top brands of bike bottom brackets for racing bikes, including SHIMANO, RaceFace, BUCKLOS. The seller of top 1 product has received honest feedback from 654 consumers with an average rating of 4.9.
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.