FSA TH-857
The FSA TH-857 is an external-cup threadless headset for 1-1/8" steerers, with forged and CNC-machined steel cups, caged ball bearings, and a 12mm deep-cup design in an EC34 fitment. It's a durable, economical replacement headset for bikes with traditional 34mm head tubes.
- 12 mm deep cup design
- Nylon top cover and plastic seal
- Forged and CNC-machined steel cups
- Upper: Ø5/32" x 20 retainer bearings
- Lower: Oversized Ø3/16" x 20B retainer bearings
- Stack height: 12.8 mm + 11.9 mm = 24.7 mm
Pairs well with
FSA TH-857
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