FSA (Full Speed Ahead)
FSA MR121 1-1/8 Inch Headset Bearing 45x45 Black Sealed Cartridge
FSA MR121 1-1/8 Inch Headset Bearing 45x45 Black Sealed Cartridge
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FSA MR121 Headset Bearing 1-1/8 45x45 30.5 x 41.8 x 8mm Sealed Cartridge
Product Description
The FSA MR121 is a genuine replacement sealed cartridge headset bearing designed for compatible 1-1/8" headset applications. Built with a 45x45 degree angular contact design, it is a practical OEM replacement for restoring smooth headset performance on worn or rough-running setups.
This bearing features a 30.5mm inner diameter, 41.8mm outer diameter, and 8mm width. It is sold individually and may also fit other headset models that use the same dimensions and bearing angle.
Key Features
- Genuine FSA MR121 replacement headset bearing
- 1-1/8" fitment
- 45x45 cartridge bearing angle
- Sealed cartridge design
- Black seal
- Sold individually
- May fit other compatible headset models using the same dimensions
Specifications
- Brand: FSA
- Model: MR121
- Product Type: Headset Bearing
- Description: Black Seal
- Fit: 1-1/8"
- Bearing Angle: 45x45
- Bearing Type: Sealed Cartridge
- Inner Diameter: 30.5mm
- Outer Diameter: 41.8mm
- Width / Thickness: 8mm
- Sold As: Individual
Compatibility
Compatible with:
- FSA headset applications using the MR121 bearing
- Other headset models using:
- 30.5mm I.D.
- 41.8mm O.D.
- 8mm width
- 45x45 angular contact bearing
Please confirm bearing dimensions and angle before purchase.
Included
- One FSA MR121 headset bearing
Warranty and Notes
- Genuine FSA replacement part
- May fit other models with matching dimensions and angle
- Includes only what is shown or described
Condition
- New
- Genuine OEM product
- Includes only what is shown or described
We do not accept returns or cancel for change of mind. We only offer returns for items that are faulty or damaged.
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