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SunRace CN12A Chain

What the checker says24will 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 864 verified gravel bike parts in this catalog. 841 produced no finding of any kind. Each variant produces 12 distinct errors and 0 distinct warnings.

Will not fit

  • Will not fiterror · CassetteChain mismatch: a campag-ekar-13 drivetrain runs a campag chain, but SunRace CN11A is hg. On 3 of the 18 verified cassettes in this catalog. Applies to 1 of 2 variants.
  • Will not fiterror · CassetteChain mismatch: a campag-ekar-13 drivetrain runs a campag chain, but SunRace CN12A is hg. On 3 of the 18 verified cassettes in this catalog. Applies to 1 of 2 variants.
  • Will not fiterror · CassetteChain mismatch: a sram-xplr-12 drivetrain runs a flattop chain, but SunRace CN11A is hg. On 3 of the 18 verified cassettes in this catalog. Applies to 1 of 2 variants.
  • Will not fiterror · CassetteChain mismatch: a sram-xplr-12 drivetrain runs a flattop chain, but SunRace CN12A is hg. On 3 of the 18 verified cassettes in this catalog. Applies to 1 of 2 variants.
  • Will not fiterror · Rear DerailleurChain mismatch: a sram-xplr-13 drivetrain runs a flattop chain, but SunRace CN11A is hg. On 3 of the 20 verified rear derailleurs in this catalog. Applies to 1 of 2 variants.
  • Will not fiterror · Rear DerailleurChain mismatch: a sram-xplr-13 drivetrain runs a flattop chain, but SunRace CN12A is hg. On 3 of the 20 verified rear derailleurs in this catalog. Applies to 1 of 2 variants.

Rg chain std, Shifter/Brake Levers. 8 more findings from the same check, on up to 2 of the 17 verified shifter/brake levers each.

Rg chain std, Rear Derailleur. 6 more findings from the same check, on up to 2 of the 20 verified rear derailleurs each.

Rg chain std, Cassette. 4 more findings from the same check, on up to 1 of the 18 verified cassettes each.

Open a variant in the builder to see the ones that apply to your own parts.

The checker compares the dimensions listed in what we check, and what we don’t. “No conflicts found” means no conflict among those dimensions — not a guarantee that a build works. Errors mean it won’t fit; warnings mean it works but check; infos are notes.

$33.00 to $34.00 MSRP·250 to 266 g

What the maker states

Speeds
11-speed (rear index count the maker rates it for) (on 1 of 2 variants); 12-speed (rear index count the maker rates it for) (on 1 of 2 variants)
System
Drivetrain system hg

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

VariantSpeedsPrice (MSRP)WeightSourceLast checkedBuild
CN12A12-speed (rear index count the maker rates it for)$34.00250 gmaker’s page2026-07-30Build with this
CN11A11-speed (rear index count the maker rates it for)$33.00266 gmaker’s page2026-07-30Build with this
Source

Source: each variant links the maker’s own page in the table above. Last checked 2026-07-30.

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.

6 of 505 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.

Where this sits

All SunRace chainsOpen a variant in the builder to see the ones that apply to your own parts