Zipp Service Course SL Seatpost Seatpost
What the checker says80will not fit
Run variant by variant through the gravel bike builder’s own engine. Every sentence below is the checker’s, unedited. Nothing here says this part fits your bike; it says what it does and does not fit among the parts we hold.
Checked against 825 verified gravel bike parts in this catalog. 810 produced no finding of any kind; that is Service Course SL Seatpost. Service Course SL Seatpost (31.6mm) clears 760. Each variant produces 15 to 65 distinct errors and 0 distinct warnings.
Will not fit
Rg seatpost, Frame. 80 more findings from the same check, on up to 1 of the 69 verified frames each.
Open a variant in the builder to see the ones that apply to your own parts.
$90.00 to $190.00 MSRP·210 to 233 g
What the maker states
- Diameter
- 27.2 mm diameter (on 1 of 2 variants); 31.6 mm diameter (on 1 of 2 variants)
- Setback
- 0 mm (on 1 of 2 variants); 20 mm (on 1 of 2 variants)
A value shown as a set or a range differs between this model’s variants and is never one variant’s spec.
2 verified variants
| Variant | Diameter | Setback | Price (MSRP) | Weight | Source | Last checked | Build |
|---|---|---|---|---|---|---|---|
| Service Course SL Seatpost | 27.2 mm diameter | 20 mm | $90.00 | 210 g | maker’s page | 2026-09-09 | Build with this |
| Service Course SL Seatpost (31.6mm) | 31.6 mm diameter | 0 mm | $190.00 | 233 g | maker’s page | 2026-07-27 | Build with this |
The rest of what the maker states1 not published
1 further field the checker looks for is not published by Zipp, so we leave it blank rather than estimate it, and that check stays silent on this seatpost. It is proprietary. Each is recorded as “not stated by the maker (not checked)”.
Source: each variant links the maker’s own page in the table above. Last checked 2026-07-27 to 2026-09-09.
Checked against
The checker ran this model against every verified part below that it has a slot for, the same way it checks a build in the builder. What follows is the verdict it actually produced for that specific pairing — not a recommendation, and not a guarantee any of these parts fits your own bike.
- 3T Exploro Race (Frame) Will not fit
- 3T Fango LTD (Fork) No conflicts found
- 8bar Gravel Carbon Disc Fork v2 (Fork) No conflicts found
- 9point8 Fall Line R (Dropper Post) No conflicts found
- Acros ZS44/28.6 | EC44/40 Headset (Headset) No conflicts found
- All-City Cosmic Stallion LTD (Frame) Will not fit
6 of 481 counterparts with a page of their own that the checker actually probed this model against, in alphabetical order by brand and model — never by price, popularity or the verdict itself.