10 Best Mountain Bike Bottom Brackets for Smooth and Reliable Riding

This post contains affiliate links. As an Amazon Associate, we earn from qualifying purchases.

When it comes to optimizing the performance of your mountain bike, choosing the right bottom bracket is essential. The bottom bracket plays a crucial role in providing smooth and reliable pedaling, ensuring a seamless riding experience on rugged terrains. With a wide variety of options available on the market, selecting the best mountain bike bottom bracket can be a daunting task. In this guide, we have compiled a list of the 10 best mountain bike bottom brackets to help you make an informed decision and enhance your cycling adventures.

Top 10 mountain bike bottom bracket In The Market

mountain bike bottom bracket Reviews

Bestseller No. 1
Hoypeyfiy Bike Bottom Bracket Mountain Bike Square-Taper Bottom Bracket Bicycles...
  • Different sizes: We provide different types of bottom brackets, 68x113mm, 68x115mm, 68x118mm, 68x124mm, 68x126mm, you can choose from them to meet your different needs
  • Simple to install: The bottom bracket is suitable for square-taper crankset and is convenient to install and remove
  • Strong structure: Mainly made of tough steel, the bottom bracket is durable, robust, wear-resistant and not easy to break
  • Well crafted: The bottom bracket features fine workmanship and has 110mm spindle length and is reliable and can provide good performance
  • Nice replacement: The bottom bracket is an important part in a mountain bike, you can use our well crafted bottom bracket o replace the worn or damaged one
Bestseller No. 2
ZYAMY 4pcs Bicycle Crank Ball Bearing 1/4 Inch X 9 Balls Ball Bearings for Bike...
  • Dimensions: The outer diameter is about 1.16 inches / 29.5 mm, the inner diameter is about 0.75 inches / 19 mm, and the ball size is 1/4 inch x 9 balls. Please confirm the size before buying! ! ! ! ! ! !
  • Material: The ball bearing cage is made of steel material, with high quality, high strength, sturdiness and durability, and can be used for a long time.
  • Widely used for bicycle parts replacement, suitable for bicycle cranks, such as: mountain bikes, children's bicycles, low riding bicycles, children's bicycles, stretch bicycles.
  • Suitable: 9-ball ball bearing seat, suitable for 19mm inner diameter head parts, it is an ideal substitute for your bicycle.
  • Packing: 4 pieces of bicycle crank bearings 1/4" ball size x 9 balls. One pair of crank bearings is used for replacement, and the other pair can be used as a spare.
Bestseller No. 3
Zreneyfex Square Taper JIS Bottom Bracket 68 X110mm/123mm/127mm for Mountain...
  • Fit for BB-UN26 68*123, 68*127, 68*110mm Square Taper Bottom Bracket.
  • Interface: Square Taper, Shell Size: 68 mm, Bearings: Steel.
  • Super-accurate bearings promote smooth operation and longer use.
  • Package Includes 1pcs Square Taper Bottom Bracket.
Bestseller No. 4
Bike Ball Crank Bearing Stainless Steel 1/4 inch x 9 Balls Bike Crank 4Pcs...
  • 【Product Size】Bearing dimensions: outer diameter of 29mm or 1.14 inches, inner diameter of 18.2mm or 0.72 inches, and a ball diameter of 1/4 inch.
  • 【Product Material】This bearing is constructed from high-quality 304 stainless steel, features a smooth ball that is resistant to rust and wear, ensuring durability.
  • 【Bike Accessories】This stainless steel ball bearing is securely fitted within the retainer and serves as a bicycle component specifically designed to replace the crank bearing.
  • 【Applications】Suitable for replacing bicycle crank bearings across various bike types, including mountain bikes, low-speed bikes, and more.
  • 【Package Contents】 2PCS of bike wheel ball frame bearings.
Bestseller No. 5
BUCKLOS Bike Bottom Bracket Square Taper,120 x 174 BSA English Bottom Bracket...
  • 【Long service life】Bucklos bottom bracket is made of high-quality materials, sturdy and durable, with minimal maintenance.
  • 【Widely compatible】Compatible with 68/80/90/100/110/120mm BSA bike thread bottom. The recommended size is for reference only, please purchase according to the original size.For safety reasons, please use BB tools to install and replace the bottom bracket.
  • 【CNC precision thread】CNC precision thread, finely crafted& easy to install. Can connect bicycles well and reduce energy loss
  • 【Integrated System】The integrated system of this square taper bottom bracket can protect the frame, provide stronger power output, and has better quality and lighter weight compared to ordinary bottom brackets, making it a good accessory for bicycles.
  • 【Super-accurate bearings】Sealed bearings provide smooth operation and no noise during long-term cycling. Comes with two waterproof and dustproof hex screws to improve service life.
Bestseller No. 6
Jaceyon Bike Ball Crank Bearing Retainer 1/4" x 9 Balls 4 Pcs Bottom Bracket...
  • 【Dimensions and specifications】:OUTER DIAMETER: 1.15inch/29mm, INNER DIAMETER: 0.7 inch/18.4mm, BALL DIAMETER: 1/4 inch. Please Please measure the size and confirm whether this size is suitable for your bicycle before buying!!!!!!!!!!
  • 【Application:】: This kind of ball bearing stainless steel ball inlaid in the retainer design,It is a bicycle parts, it's suitable for replacing the crank bearing of Kid Bicycles.
  • 【Material】: This ball bearing retainer made of steel, high quality, durable and high intensity.
  • 【Widely usage】:This beads rack for bike parts replacement, suitable for bike crank, such as 26" Next brand mountain bikes, Kent Genesis bike, Kid Schwinn S5230 bike.
  • 【Satisfaction guarantee】: Your purchase is fully protected when you order today. If you are not satisfied with with our products, contact us any time, We will get you back within 24 hours try our best to make things right.
Bestseller No. 7
SHIMANO BB-MT501 English Bottom Bracket - English, 68/73mm, Fits Hollowtech II...
  • English (BSA) threaded bottom bracket
  • For use with MTB
  • Defined Color: Black
  • Aluminum threaded cups
Bestseller No. 8
COTOUXKER Bicycle Crank Puller, Bottom Bracket Removal Tool for Easy Mountain...
  • Universal Compatibility: Our bike crank removal tool is designed for various bicycle models, compatible with 20 teeth splined type and standard square tapered crank sets, ensuring broad applicability.
  • Durable High-Quality Build: This crank arm puller is crafted from high-strength steel with a scratch-resistant black coating, guaranteeing long-lasting durability. The sturdy plastic grip ensures a comfortable and reliable handle, facilitating efficient use.
  • Perfect Tool Kit: Inclusive of a crank extractor, bottom bracket remover, and a 16mm spanner, the crank puller bike tool kit providing a complete solution for crank and bottom bracket removal. Compatible with a range of popular brands, offering a versatile tool set.
  • User-Friendly Convenience: The crank puller removal tool is designed for easy use by outdoor biking enthusiasts and home bike mechanics alike. The compact size allows for convenient storage in a toolbox, and the simple operation makes it beginner-friendly.
  • Reliable Warranty and Service: Purchase with confidence! COTOUXKER offers a reliable warranty and service. For any concerns about our bike tool kit, reach out without hesitation. We are committed to providing the best service for your bicycle repair needs, ensuring your satisfaction.
Bestseller No. 9
  • Fits JIS square-taper cranksets
  • Adapter material: Aluminum
  • SHIMANO quality/performance cartridge bearing square bottom bracket
  • Better chainline stability with chain line stabilizer
Bestseller No. 10
VGEBY1 Bike Bottom Bracket Square Hole Crank Axis, Middle Mountain Bike Center...
  • GREAT WORKMANSHIP: With good performance, bearing structure, the degree of lubrication is quite good, and the steel shell can absorb roundness tolerance for installing ports of Bracket Bottom.
  • NICE SYSTEM: Integrated System can protect the frame to provide more power output, which makes the Bottom Bracket working more effective.​
  • LONG TERM USE: The Square Hole Crank Axis is made with good materials, which is solid and with a long service time.
  • DESIGNED FOR: Professional suitable for 68mm frame shell, Square Hole Crank Axis is a good accessory for your bikes.
  • GUARANTEE: If you are not satisfied with our product received, you can apply for unconditional return and refund within 180 days. In terms of any problem of this product, you can send emails as soon.