The Tern Headset Sealed Bearing HSD (Part Number: BKTNP398) is an official replacement component designed specifically for Tern HSD e-bike models (such as the HSD P9). It features durable, sealed cartridge bearings engineered to keep out dust and moisture, ensuring long-lasting and smooth steering geometry under heavy cargo loads.
- Compatibility: Explicitly matched for the Tern HSD P9 and related HSD configurations.
- Bearing Type: High-quality sealed bearing system providing a smooth rotation upgrade over standard loose or caged ball bearings.
- Function: Replaces the internal headset mechanism to fix grindy, noisy, or rough steering feel, as well as fixing any "play" or wobbling developing within your integrated e-bike headtube.
Note - generic Tern headset image shown.