Product Description
The Shimano BB-ES300-E is a durable sealed-cartridge bottom bracket designed as a dependable replacement for compatible Shimano Octalink V2 cranksets and E-Type configurations.
This version features a 68mm English/BSA threaded shell, 113mm spindle length, and Shimano E-Type configuration. Its hollow 22mm Octalink spindle provides a strong, secure interface for compatible cranksets while the sealed cartridge design offers reliable everyday performance with minimal maintenance.
What Does E-Type Mean?
E-Type refers to a specific bottom bracket/front derailleur mounting configuration. E-Type front derailleurs use a mounting plate located at the bottom bracket area rather than attaching only to the seat tube like a traditional clamp-on derailleur.
Because of this mounting arrangement, an E-Type bottom bracket should not automatically be treated as interchangeable with a standard non-E-Type Octalink bottom bracket, even when other dimensions appear similar.
Please confirm whether your bicycle requires an E-Type BB-ES300-E configuration before ordering.
Important: Shimano Octalink V1 and Octalink V2 are not cross-compatible systems. This bottom bracket is intended for compatible Octalink V2 cranksets only. Always match the Octalink version, E-Type configuration, shell width, spindle length, and crankset specifications before purchase.
Key Features
- Genuine Shimano BB-ES300-E bottom bracket
- E-Type configuration
- Designed for compatible E-Type front derailleur / bottom bracket mounting systems
-
Octalink V2 spline interface
-
68mm English / BSA threaded bottom bracket shell
- 113mm spindle length
- Hollow 22mm spindle
- Sealed cartridge construction
- Durable replacement for compatible Shimano Octalink V2 cranksets
- Low-maintenance design
Specifications
- Brand: Shimano
- Model: BB-ES300-E
- Product Type: Cartridge Bottom Bracket
- Interface: Shimano Octalink V2
- Configuration: E-Type
- Shell Width: 68mm
- Spindle Length: 113mm
- Threading: English / BSA
- Spindle: Hollow
- Spindle Diameter: 22mm
Compatibility
Designed for compatible bicycles and cranksets requiring:
-
Shimano Octalink V2 interface
- E-Type bottom bracket configuration
-
68mm English/BSA threaded bottom bracket shell
- 113mm spindle length
Important E-Type Compatibility
This is the E-Type version of the BB-ES300.
E-Type refers to a specific mounting arrangement associated with E-Type front derailleur systems at the bottom bracket area. Do not assume this is interchangeable with a standard non-E-Type Octalink bottom bracket based only on shell width and spindle length.
Please compare the complete model and configuration with the original bottom bracket.
Important Octalink V1 vs V2 Compatibility
This is an Octalink V2 bottom bracket and is not compatible with Octalink V1 cranksets.
Octalink bottom brackets are not universal simply because they use an 8-spline interface. Please confirm the Octalink version, E-Type configuration, spindle length, shell width, and crankset requirements before purchase.
Included
- One Shimano BB-ES300-E bottom bracket
- Includes only what is pictured and described
Warranty and Notes
- Genuine Shimano replacement component
- Crank arm fixing bolts are not included
- Confirm E-Type configuration before ordering
- Confirm Octalink V2 compatibility
- Confirm 68mm shell width and 113mm spindle length
- Professional installation is recommended
Condition
- New
- Genuine Shimano product
- Includes only what is pictured and described
