Fit Bike Co Key Sprocket Sprocket
What the checker says15will not fit2check before you buy
Run variant by variant through the BMX 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 664 verified BMX parts in this catalog. 648 produced no finding of any kind. Each variant produces 5 distinct errors and 2 distinct warnings.
Will not fit
Bmx sprocket drive, Cranks. 15 more findings from the same check, on up to 1 of the 38 verified cranks each.
Open a variant in the builder to see the ones that apply to your own parts.
Check before you buy
- Check before you buywarning · Rear CogChain width mismatch: Sprocket = 1/8in, Rear cog = 3/32in. Sprocket, cog and chain should share one width class (1/8in or 3/32in) - a mixed stack runs but skips and wears fast. On 10 of the 29 verified rear cogs in this catalog. Applies to all 3 variants.
- Check before you buywarning · ChainChain width mismatch: Sprocket = 1/8in, Chain = 3/32in. Sprocket, cog and chain should share one width class (1/8in or 3/32in) - a mixed stack runs but skips and wears fast. On 1 of the 21 verified chains in this catalog. Applies to all 3 variants.
$64.95 MSRP·77 to 109 g
What the maker states
- Mount
- Spline
- Pitch
- 1/8"
- Teeth
- 25 teeth (on 1 of 3 variants); 28 teeth (on 1 of 3 variants); 30 teeth (on 1 of 3 variants)
A value shown as a set or a range differs between this model’s variants and is never one variant’s spec.
3 verified variants
| Variant | Teeth | Price (MSRP) | Weight | Source | Last checked | Build |
|---|---|---|---|---|---|---|
| Key Sprocket 25T | 25 teeth | $64.95 | 77 g | maker’s page | 2026-07-27 | Build with this |
| Key Sprocket 28T | 28 teeth | $64.95 | 95 g | maker’s page | 2026-07-27 | Build with this |
| Key Sprocket 30T | 30 teeth | $64.95 | 109 g | maker’s page | 2026-07-27 | Build with this |
Source
Source: each variant links the maker’s own page in the table above. Last checked 2026-07-27.
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.
- Alienation Rush V3 / Black Sheep Rear Wheel (Rear Wheel / Hub) No conflicts found
- Answer "Low Rider" Tapered Dagger Carbon Fork (20mm) (Fork) No conflicts found
- Answer 3/32" Performance Drive Chain (Chain) Check before you buy
- Answer Alloy Pivotal Seatpost (26.8mm) (Seatpost) No conflicts found
- Answer Alloy Pivotal Seatpost (27.2mm) (Seatpost) No conflicts found
- Answer Carbon Pivotal Seatpost (22.2mm) (Seatpost) No conflicts found
6 of 524 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.