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Pinion P1.18 Gearbox

What the checker says647will not fit

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 6168 verified mountain bike parts in this catalog. 5775 produced no finding of any kind. Each variant produces 391 distinct errors and 0 distinct warnings.

  • info · this part aloneHeads-up: Pinion P1.12 is a Pinion Standard gearbox and needs a frame built with a matching gearbox interface at the bottom bracket. Applies to 1 of 2 variants.
  • info · this part aloneHeads-up: Pinion P1.18 is a Pinion Standard gearbox and needs a frame built with a matching gearbox interface at the bottom bracket. Applies to 1 of 2 variants.

Will not fit

  • Will not fiterror · FrameNo gearbox interface: Pinion P1.12 mounts to a dedicated gearbox bridge in the bottom-bracket area, and Antidote Carbonjack is not built with one - the maker states gearboxes are for frames "designed for the purpose" with a corresponding gearbox interface. On 2 of the 258 verified frames in this catalog. Applies to 1 of 2 variants.
  • Will not fiterror · FrameNo gearbox interface: Pinion P1.12 mounts to a dedicated gearbox bridge in the bottom-bracket area, and Transition Spur Carbon is not built with one - the maker states gearboxes are for frames "designed for the purpose" with a corresponding gearbox interface. On 2 of the 258 verified frames in this catalog. Applies to 1 of 2 variants.
  • Will not fiterror · FrameNo gearbox interface: Pinion P1.18 mounts to a dedicated gearbox bridge in the bottom-bracket area, and Antidote Carbonjack is not built with one - the maker states gearboxes are for frames "designed for the purpose" with a corresponding gearbox interface. On 2 of the 258 verified frames in this catalog. Applies to 1 of 2 variants.
  • Will not fiterror · FrameNo gearbox interface: Pinion P1.18 mounts to a dedicated gearbox bridge in the bottom-bracket area, and Transition Spur Carbon is not built with one - the maker states gearboxes are for frames "designed for the purpose" with a corresponding gearbox interface. On 2 of the 258 verified frames in this catalog. Applies to 1 of 2 variants.

Gearbox frame, Frame. 508 more findings from the same check, on up to 1 of the 258 verified frames each.

Gearbox derailleur, Rear Derailleur. 75 more findings from the same check, on up to 1 of the 75 verified rear derailleurs each.

Gearbox cassette, Cassette. 60 more findings from the same check, on up to 1 of the 60 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.

$2,145.00 to $2,336.00 MSRP·2350 to 2700 g

What the maker states

Mount
Pinion Standard
Speeds
12-speed (rear index count the maker rates it for) (on 1 of 2 variants); 18-speed (rear index count the maker rates it for) (on 1 of 2 variants)
Gear range
Gear range: 600 (on 1 of 2 variants); Gear range: 636 (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

VariantSpeedsGear rangePrice (MSRP)WeightSourceLast checkedBuild
P1.1818-speed (rear index count the maker rates it for)636$2,336.002700 gmaker’s page2026-09-20Build with this
P1.1212-speed (rear index count the maker rates it for)600$2,145.002350 gmaker’s page2026-09-20Build with this
Source

Source: each variant links the maker’s own page in the table above. Last checked 2026-09-20.

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 1909 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

Previous: Pinion C1.12Pinion P1.18 is the last model on that list.All Pinion gearboxsOpen a variant in the builder to see the ones that apply to your own parts