X-Fusion O2 Pro Rear Shock
What the checker says309will not fit40check before you buy20worth knowing
Run variant by variant through the mountain 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 5149 verified mountain bike parts in this catalog. 4919 produced no finding of any kind. Each variant produces 96 distinct errors and 10 distinct warnings.
Will not fit
- Will not fiterror · FrameShock mount mismatch: Frame uses a Trunnion shock but Shock is Standard eyelet. On 88 of the 258 verified frames in this catalog. Applies to all 4 variants.
- Will not fiterror · FrameShock size mismatch: Frame needs 230x65mm but Shock is 210x55mm. On 25 of the 258 verified frames in this catalog. Applies to all 4 variants.
- Will not fiterror · FrameShock size mismatch: Frame needs 205x65mm but Shock is 210x55mm. On 22 of the 258 verified frames in this catalog. Applies to all 4 variants.
- Will not fiterror · FrameShock size mismatch: Frame needs 185x55mm but Shock is 210x55mm. On 20 of the 258 verified frames in this catalog. Applies to all 4 variants.
- Will not fiterror · FrameShock size mismatch: Frame needs 190x45mm but Shock is 210x55mm. On 15 of the 258 verified frames in this catalog. Applies to all 4 variants.
- Will not fiterror · FrameShock size mismatch: Frame needs 205x60mm but Shock is 210x55mm. On 14 of the 258 verified frames in this catalog. Applies to all 4 variants.
- Will not fiterror · FrameShock size mismatch: Frame needs 230x60mm but Shock is 210x55mm. On 9 of the 258 verified frames in this catalog. Applies to all 4 variants.
- Will not fiterror · FrameShock size mismatch: Frame needs 250x75mm but Shock is 210x55mm. On 9 of the 258 verified frames in this catalog. Applies to all 4 variants.
Hardtail shock, Frame. 224 more findings from the same check, on up to 1 of the 258 verified frames each.
Shock stroke over, Frame. 60 more findings from the same check, on up to 1 of the 258 verified frames each.
Shock size, Frame. 17 more findings from the same check, on up to 7 of the 258 verified frames each.
Open a variant in the builder to see the ones that apply to your own parts.
Check before you buy
Package only, Frame. 40 more findings from the same check, on up to 1 of the 258 verified frames each.
Open a variant in the builder to see the ones that apply to your own parts.
Worth knowing
Bundled shock, Frame. 20 more findings from the same check, on up to 1 of the 258 verified frames each.
Open a variant in the builder to see the ones that apply to your own parts.
$219.00 to $279.00 MSRP·480 to 490 g
What the maker states
- Eye
- Eye-to-eye 210 mm
- Stroke
- 55 mm
- Mount
- Standard eyelet
- Spring
- air spring
4 verified variants
| Variant | Price (MSRP) | Weight | Source | Last checked | Build |
|---|---|---|---|---|---|
| O2 Pro RL (2016) | $259.00 | 490 g | maker’s page | 2026-09-08 | Build with this |
| O2 Pro R (2016) | $219.00 | 480 g | maker’s page | 2026-09-08 | Build with this |
| O2 Pro RLR | $249.00 | 485 g | maker’s page | 2026-09-08 | Build with this |
| O2 Pro RLX | $279.00 | 485 g | maker’s page | 2026-09-08 | Build with this |
The rest of what the maker states1 not published
1 further field the checker looks for is not published by X-Fusion, so we leave it blank rather than estimate it, and that check stays silent on this rear shock. It is oem only. 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 2026-09-08.
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.
- 5DEV R-SPEC Trail/Enduro Cranks (Crankset) No conflicts found
- 9point8 Fall Line (Dropper Post) No conflicts found
- 9point8 Stout (31.8, 30mm) (Stem) No conflicts found
- ACID SLX 30 front (Front Wheel) No conflicts found
- ACID SLX 30 rear (Rear Wheel) No conflicts found
- Acros ZS44/ZS56 (Headset) No conflicts found
6 of 1859 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.