BUCKLOS Square Taper Bottom Bracket BB68 MTB Road E-Bike BSA
BUCKLOS Square Taper Bottom Bracket BB68 MTB Road E-Bike BSA
BUCKLOS Bicycle Bottom Bracket – Square Taper BSA for MTB, Road & E-Bike
Upgrade your drivetrain with the BUCKLOS CNC High-Strength Steel Bottom Bracket. Engineered for square taper cranksets, this BSA-threaded bottom bracket delivers smooth, reliable pedaling performance across a wide range of frame shell widths — making it a versatile choice for mountain bikes, road bikes, and e-bikes alike.
With a sealed bearing design, this bottom bracket keeps dirt, water, and debris out, ensuring long-lasting smooth rotation even in demanding trail or urban conditions. The precision CNC-machined steel construction provides exceptional durability and strength, so you can ride with confidence mile after mile.
Key Features
- Universal BSA Threading: Compatible with 68mm frame shells — fits BB68, BB80, BB90, BB100, BB110, BB120 and more
- Multiple Size Options: Available in 68×110.5 / 113 / 116 / 118 / 120 / 122.5 / 124.5 / 126mm
- CNC High-Strength Steel: Precision-machined for a perfect fit and long-term durability
- Sealed Bearing Construction: Resists moisture and grit for consistent, smooth performance
- Lightweight Design: Approximately 320g (weight varies slightly by size)
- Wide Compatibility: Suitable for MTB, road bikes, and e-bikes with square taper cranksets
- Easy Installation: Includes 2 mounting screws for straightforward setup
Specifications
| Brand | BUCKLOS |
| Product Type | BSA Bottom Bracket (Square Taper) |
| Frame Shell Compatibility | 68mm BSA Threaded |
| Available Sizes | 68×110.5 / 113 / 116 / 118 / 120 / 122.5 / 124.5 / 126mm |
| Material | CNC High-Strength Steel |
| Bearing Type | Sealed Bearing |
| Weight | ~320g (size dependent) |
| Package Contents | 1× Bottom Bracket + 2× Mounting Screws |
| Country of Origin | Made in Mainland China |
Compatible Bike Types
This bottom bracket is designed for use with square taper cranksets on mountain bikes (MTB), road bikes, gravel bikes, and e-bikes. Always verify your frame's shell width and crankset interface type before ordering.
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Frequently Asked Questions
Q: What crankset type is this BUCKLOS bottom bracket compatible with?
A: This BUCKLOS bottom bracket is designed specifically for square taper cranksets. It uses a BSA (British Standard) thread pattern and is compatible with 68mm frame shell widths. Always check your crankset's interface type and your frame's shell width before purchasing.
Q: What sizes are available for this bicycle bottom bracket?
A: This bottom bracket is available in multiple spindle lengths to suit different cranksets and chainline requirements: 68×110.5mm, 113mm, 116mm, 118mm, 120mm, 122.5mm, 124.5mm, and 126mm. Choose the size that matches your crankset manufacturer's recommendation.
Q: Is this bottom bracket suitable for e-bikes?
A: Yes! The BUCKLOS bottom bracket is built with CNC high-strength steel and a sealed bearing design, making it robust enough for the additional torque demands of e-bikes, as well as standard MTB and road cycling applications.
Q: What is included in the package?
A: Each package includes 1× BUCKLOS Bottom Bracket and 2× Mounting Screws, providing everything you need for a straightforward installation.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.