FSA TH-857 Threadless Headset - 1.1/8"
Best current price£17.99from Tweeks Cycles
Best offers
Shopping.co.uk recommended and popular offers
Tweeks Cycles£17.99Visit shop FSA TH-857 1 1/8 Inch Threadless Headset - Black
Visit shopTweeks Cycles£17.99Visit shop All Offers
3 offers from £17.99 - £22.99
View price history by clicking the chart icon.
FSA TH-857 Threadless 1.1/8 Headset BlackFree delivery in 1–3 days£22.99Visit shop →
Product Information
Full details
This guide is for cyclists looking to understand and maintain their FSA TH-857 threadless headset. The FSA TH-857 is designed to provide smooth and reliable steering performance for your bike. Note that this guide is specific to the 1-1/8" model and does not cover other headset types.
All features
| Model Part Number | TH-857 |
|---|---|
| Brand | FSA |
Extended Product Information
FAQs
What tools are needed for installation?
A headset press, crown race installer, and various wrenches are typically needed for installation. It's best to consult a professional bike mechanic.
How often should I lubricate the bearings?
Lubricate the bearings every 6 months or more frequently if you ride in wet or dirty conditions.
Can I replace the bearings myself?
Yes, with the proper tools and knowledge. However, if you are not familiar with headset maintenance, it is recommended to have a professional mechanic perform the service.
What is the stack height?
The stack height of the FSA TH-857 is 25.8mm (14mm top + 11.8mm bottom).
What is the material of the cups?
The cups are made of 6061T6 forged and CNC machined alloy.
Troubleshooting
Steering feels stiff or notchy.
Check for over-tightening of the headset or damage to the bearings. Loosen the top cap and adjust as needed. Replace the bearings if damaged.
Play or looseness in the headset.
Tighten the top cap and stem bolts to remove any play. If the play persists, the bearings may be worn and need replacement.
Pros and Cons
Pros
- Durable construction with 6061T6 alloy.
- Smooth performance due to caged ball bearings.
- Precise machining for a secure fit.
- Standard 1-1/8" size, making it widely compatible.
Cons
- Requires specific tools for installation and maintenance.
- Caged ball bearings may require more frequent maintenance compared to sealed cartridge bearings.
Setup, Compatibility & Care
- Compatibility: Ensure this 1-1/8" headset is compatible with your frame and fork's headtube and steerer tube dimensions.
- Installation: Proper installation is crucial for performance. It's recommended to have a professional bike mechanic install the headset using appropriate tools to ensure correct alignment and bearing preload.
- Maintenance: Regularly inspect the headset for any play or looseness. Clean and lubricate the bearings periodically to maintain smooth operation. Check the headset after riding in wet or muddy conditions.
- Spares: Replacement top and bottom bearings (MR013) and crown race (H6010) are available. Keep these spares on hand.