Bottom Brackets of 2025
- Best Choice
1
SRAMSRAM DUB English Bottom Bracket - English/BSA, 68/73mm, Black
Why we love it
Smooth and efficient power transfer.
Compatible with multiple bike setups.
Excellent weather protection.
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- Value for Money
2
SHIMANOShimano SM-BBR60 Ultegra / FC-CX70 / 105 Hollowtech II Bottom Bracket
Main highlights- smoother than SM-BB6700 (50 % less friction)
- small ball bearings keep weight low
- recommended for Ultegra FC-R8000, FC-6800, 105 FC-5800, Metrea FC-U5000, FC-CX70
- bearing cups anodized
- 14 g lighter than SM-BB6700
3
SHIMANOSHIMANO Square Type Bicycle Bottom Bracket - BSA 68MM, Spindle: 122.5MM - EBBUN300B22X
Main highlights- SHIMANO quality/performance cartridge bearing square bottom bracket
- Fits JIS square-taper cranksets
- Better chainline stability with chain line stabilizer
- Adapter material: Aluminum
4
SHIMANOSHIMANO BB-RS501 Hollowtech II English Bottom Bracket
Main highlights- Weight: 93
- Spindle Interface Type: Shimano Hollowtech II
- For use with English thread bottom bracket frames
- Designed for a perfect fit with Hollowtech II 24mm crank spindles
- Anodized aluminum cups are high strength and light weight
5
BUCKLOSBUCKLOS Bike Square Taper Bottom Bracket - 68/80/90/100/110/120x110.5 113 116 118 122.5 127 140 152 156 166 174mm Bicycle BSA Brackets for Mountain/MTB/Road/Fat Bike/Ebike
Main highlights- 【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, and please use BB tools to install and replace the bottom bracket
- 【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
- 【Long Service Life】Bucklos bottom bracket is made of high-quality materials, sturdy and durable, with minimal maintenance
- 【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
- 【CNC Precision Thread】CNC precision thread, finely crafted& easy to install. Can connect bicycles well and reduce energy loss
6
SHIMANOSHIMANO BB-UN300 Bottom Bracket - English, 73 x 118mm Spindle, Square Taper JIS
Main highlights- Spindle Length: 118
- Fits JIS square-taper cranksets
- Crankarm fixing bolts sold separately
- Bottom Bracket Shell I.D.: 1.37
- BB Shell Width (mm): 73 mm
7
SHIMANOSHIMANO BB-UN300 Bottom Bracket - English, 68 x 110mm Spindle, Square Taper JIS
Main highlights- Spindle Length: 110
- Hollow spindle
- Fits JIS square-taper cranksets
- Crankarm fixing bolts sold separately
- BB Shell Width (mm): 68 mm
8
SHIMANOSHIMANO BB-UN300 Bottom Bracket - English, 68 x 113mm Spindle, Square Taper JIS
Main highlights- Spindle Length: 113
- Fits JIS square-taper cranksets
- Crankarm fixing bolts sold separately
- Bottom Bracket Shell I.D.: 1.37
- BB Shell Width (mm): 68 mm
9
SHIMANOShimano BB-UN300 Bottom Bracket - English, 68 x 117.5mm Spindle, Square Taper JIS
Main highlights- SHIMANO quality/performance cartridge bearing square bottom bracket
- Fits JIS square-taper cranksets
- Better chainline stability with chain line stabilizer
- Adapter material: Aluminum
10
SHIMANOShimano BB-UN300 Bottom Bracket - English, 73 x 123mm Spindle, Square Taper JIS
Main highlights- Spindle Interface Type: Square Taper JIS
- Hollow spindle
- Crankarm fixing bolts sold separately
- Bottom Bracket Shell I.D.: 1.37