Best Bottom Brackets for Bikes of 2025

The SHIMANO BB RS501 is a high-quality bottom bracket that enhances your bike's performance. Weighing only 93 grams, it is lightweight, making it easier for you to ride without unnecessary bulk. The easy installation feature allows you to set it up quickly, saving you time and effort. Its special seal construction ensures that dirt and moisture are kept out, prolonging the life of your bike components. With smooth performance, you can enjoy a more enjoyable and efficient ride on various terrains.

The SHIMANO BB-UN300 is designed with a 68mm threaded shell, making it ideal for a wide range of bike frames. The BC 1.37 threading ensures compatibility with various cranksets, allowing for smooth pedalling performance. Its square taper design provides a secure fit, enhancing the overall stability of your bike. With a size of 68-122.5 mm, this bottom bracket offers the flexibility needed for different bike setups, making it a convenient choice for any cyclist.

The SHIMANO BBR60 Bottom Bracket features wider bearing placement and a larger axle diameter, providing improved stability and performance on your bike. The innovative seal design minimises the bearing interface, which helps to ensure a smoother ride. Additionally, the free high-efficiency rubber seals effectively keep out dirt, mud, and water, enhancing the longevity of the components. With a sealed cartridge assembly and oversized ball bearings, you can expect reduced weight, increased strength, and enhanced stiffness for a more enjoyable cycling experience.

The SHIMANO BB MT501 is a reliable bottom bracket set designed for your bike. With its English thread compatibility, it fits frames with widths of 68 to 73 mm, ensuring a secure and stable installation. Weighing just 10 grams, it is lightweight, which contributes to an overall efficient ride. The compact package dimensions of 10 x 10 x 10 cm make it easy to store or transport, providing convenience for cyclists who are always on the go.

The SHIMANO XT Bottom Bracket is designed for mountain biking, offering a reliable and efficient performance. Its Hollowtech II design means it is lightweight yet sturdy, allowing for smoother pedalling and better power transfer. With two items included in the package, you have everything you need for a straightforward installation. This bottom bracket enhances your cycling experience by providing durability and stability, ensuring you can tackle various terrains with confidence.

The Connected Essentials Bike Mat is designed to keep your floors clean and protected while storing your bike in various locations like your hallway or garage. Its high grip, non-slip backing ensures that the mat stays in place, preventing your bike from falling over and causing damage. Made from durable automotive carpet, it is easy to clean and resistant to stains, making maintenance a breeze. With optimal dimensions of 180cm by 30cm, this mat provides ample space for your bike without taking up too much floor area.

The SRAM GXP Team Cups offer notable features for cycling enthusiasts. With gutter seal technology, you benefit from enhanced protection against dirt and debris, ensuring smoother performance. Weighing just 105g, these cups provide a lightweight option for your bike. The improved tool engagement makes installation and maintenance easier, allowing you to spend less time fixing and more time riding. Additionally, the sealed cartridge bearings enhance durability, offering you a reliable and smooth ride.

The SHIMANO BB-MT501 Bottom Bracket is designed specifically for mountain biking, ensuring compatibility with your MTB setup. Its English (BSA) threaded design makes installation straightforward and secure, so you can focus on your ride. The black aluminium threaded cups not only enhance durability but also provide a lightweight solution for your bike. This bottom bracket is tailored for use with Hollowtech II spindles, which means you get optimal performance and a smooth ride.

The FSA BB-4000 Bottom Bracket features oversized cartridge bearings, which provide enhanced performance and durability. These bearings ensure a smoother ride, reducing friction and allowing for more efficient power transfer as you pedal. By using larger bearings, the design increases the overall strength and reliability of the bottom bracket, giving you confidence during your rides. Additionally, these bearings help in minimising maintenance, making it easier for you to enjoy your cycling experience without regular upkeep.

The A ABSOPRO Bearing Retainer is a durable replacement part designed specifically for your bicycle. Made from high-intensity steel, it features 20 balls and is suitable for head parts with a 33.5mm inner diameter. With an outer diameter of 40mm, this product ensures a precise fit, enhancing your bike's performance. You will appreciate its easy installation, as no special tools are required, making it a convenient choice for replacing broken components.