Bottom brackets
Shimano BB-ES300 Bottom Bracket
BSA 68 mm · 118 mm spindle
Compatibility: reviewed
Known specifications can be used by the compatibility engine.
Retailer offers
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Technical data
Specifications
- Supported BB shells
- BSA-68
- Supported crank spindles
- Octalink
- Spindle length
- 118 mm
- Front drivetrain groups
- Shimano Alivio M3100 3x9
Catalog trust
Evidence and freshness
Technical-source dates and retailer offer checks are separate. A retailer check does not validate compatibility.
Report a correction- Technical review
- Jul 29, 2026
- Compatibility review
- Reviewed Jul 29, 2026
Approved technical sources
- Shimano bottom bracket specifications
- productinfo.shimano.com/en/spec/general-bottom-bracketManufacturerSource checked Jul 29, 2026Evidence reviewed Jul 29, 2026
- Shimano crankset and bottom bracket compatibility C-449
- productinfo.shimano.com/en/compatibility/C-449ManufacturerSource checked Jul 29, 2026Evidence reviewed Jul 29, 2026
- Shimano current MTB component ordering catalog
- set.shimano.co.jp/bc_catalog/mtb.pdfManufacturerSource checked Jul 29, 2026Evidence reviewed Jul 29, 2026
- Shimano current drivetrain compatibility tables
- productinfo.shimano.com/pdfs/product/latest/Compatibility_en.pdfManufacturerSource checked Jul 29, 2026Evidence reviewed Jul 29, 2026