FSA DX Internal/Threadless Headset
Lists today at $74 per set
Own a FSA DX Internal/Threadless Headset?
Track its value in your garage, or list it for sale locally in a few taps.
What a used one is worth
New
$74
$63 to $74
Like new
$70
$60 to $74
Excellent
$67
$57 to $73
Good
$56
$47 to $61
Fair
$41
$35 to $45
For parts
$22
$19 to $24
From the current list price, adjusted for condition. Guidance from our catalog, not an appraisal.
Overview
- Brand
- FSA
- Model
- DX Internal/Threadless Headset
- Model number
- NO.9M/CUP/CC/7BY
- Type
- Headset
- Years
- up to 2026
- Current list price
- $74 per set (as of 2026-09)
Compatibility
- Shis
- ZS44/28.6, EC49.57/39.78
Specifications
- Type
- zero_stack, external_cup
From FSA USA's own web store (fsaproshop.com, linked from FSA's site as its US webstore); fullspeedahead.com refuses automated requests, so it was not used. S.H.I.S. codes are copied as FSA writes them (FSA uses exact bores such as 49.57 and a 39.78 crown race) and are null where the store gives only head tube outside diameters. Launch years are not published. Fixed 2026-09-27: spec.type set to ["zero_stack","external_cup"] because its S.H.I.S. codes mix mounting types (was "zero_stack").