Restore the ultimate shifting precision and smoothness of your 12-speed drivetrain.
The Specialized FH-904 Micro Spline freehub body (manufacturer part number S212100003) is the ideal original replacement part to upgrade or restore the rear hub of your bicycle. Manufactured by Formula for Specialized, this solid steel freehub body is designed to accommodate modern 12-speed Shimano Micro Spline cassettes. Thanks to its 3-pawl system and sealed bearings, it guarantees maximum pedaling efficiency, smoothness, and excellent resistance to atmospheric agents.
FREEHUB BODY SPECIALIZED FH-904 SHIMANO MICROSPLINE (S212100003) MAIN FEATURES:
- Shimano 12-Speed Reliability: Specifically designed to integrate with original equipment manufacturer (OEM) Formula hubs, offering a smooth transition to the Shimano Micro Spline standard.
- Steel Construction: The high-strength steel structure ensures superior longevity compared to aluminum versions, perfectly withstanding the heavy loads of 12-speed drivetrains even on E-bikes.
- Protection and Smoothness: Equipped with sealed cartridge bearings that ensure smooth rotation over time, preventing mud, dust, and water from compromising the internal mechanisms.
- Precise Engagement: The proven 3-pawl system ensures a prompt and secure response to every pedal stroke.
- Ready to Use: The kit already includes the threaded driveside end cap for a quick, precise, and hassle-free installation.
TECHNICAL SPECIFICATIONS
| Specification | Detail |
|---|---|
| Brand | Specialized (Manufactured by Formula) |
| Specialized Part Number | S212100003 |
| Model Code | FH-904 (also compatible with SP-2101 / DWG-1401 specifications) |
| Cassette Interface | Shimano Micro Spline (12-speed) |
| Material | High-strength steel (Steel) |
| Engagement Type | 3-pawl system |
| Bearing Type | Sealed Cartridge Bearing |
| Included in the package | Threaded Driveside End Cap |
| Weight | 178 grams |
COMPATIBILITY
This original Specialized replacement part is installed as standard equipment on several of the brand's bike models (equipped with standard or Boost Formula hubs), including:
- Specialized Levo / Turbo Levo Comp / Levo SL (from 2020 onwards)
- Specialized Kenevo Comp (from 2020 onwards)
- Specialized Diverge Comp Carbon / Expert Carbon (from 2021 onwards)
- Specialized Crux Comp (from 2024/2025 onwards)
- Also compatible with Formula ehl-148s / ehl-1481 wheels and hubs.
Note: It is always recommended to check the visual correspondence or the identification code on the currently installed freehub body before purchasing.
Restore the ultimate shifting precision and smoothness of your 12-speed drivetrain.
The Specialized FH-904 Micro Spline freehub body (manufacturer part number S212100003) is the ideal original replacement part to upgrade or restore the rear hub of your bicycle. Manufactured by Formula for Specialized, this solid steel freehub body is designed to accommodate modern 12-speed Shimano Micro Spline cassettes. Thanks to its 3-pawl system and sealed bearings, it guarantees maximum pedaling efficiency, smoothness, and excellent resistance to atmospheric agents.
FREEHUB BODY SPECIALIZED FH-904 SHIMANO MICROSPLINE (S212100003) MAIN FEATURES:
- Shimano 12-Speed Reliability: Specifically designed to integrate with original equipment manufacturer (OEM) Formula hubs, offering a smooth transition to the Shimano Micro Spline standard.
- Steel Construction: The high-strength steel structure ensures superior longevity compared to aluminum versions, perfectly withstanding the heavy loads of 12-speed drivetrains even on E-bikes.
- Protection and Smoothness: Equipped with sealed cartridge bearings that ensure smooth rotation over time, preventing mud, dust, and water from compromising the internal mechanisms.
- Precise Engagement: The proven 3-pawl system ensures a prompt and secure response to every pedal stroke.
- Ready to Use: The kit already includes the threaded driveside end cap for a quick, precise, and hassle-free installation.
TECHNICAL SPECIFICATIONS
| Specification | Detail |
|---|---|
| Brand | Specialized (Manufactured by Formula) |
| Specialized Part Number | S212100003 |
| Model Code | FH-904 (also compatible with SP-2101 / DWG-1401 specifications) |
| Cassette Interface | Shimano Micro Spline (12-speed) |
| Material | High-strength steel (Steel) |
| Engagement Type | 3-pawl system |
| Bearing Type | Sealed Cartridge Bearing |
| Included in the package | Threaded Driveside End Cap |
| Weight | 178 grams |
COMPATIBILITY
This original Specialized replacement part is installed as standard equipment on several of the brand's bike models (equipped with standard or Boost Formula hubs), including:
- Specialized Levo / Turbo Levo Comp / Levo SL (from 2020 onwards)
- Specialized Kenevo Comp (from 2020 onwards)
- Specialized Diverge Comp Carbon / Expert Carbon (from 2021 onwards)
- Specialized Crux Comp (from 2024/2025 onwards)
- Also compatible with Formula ehl-148s / ehl-1481 wheels and hubs.
Note: It is always recommended to check the visual correspondence or the identification code on the currently installed freehub body before purchasing.
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