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SRAM Universal Derailleur Hanger AC-DRHG-UDH-A1

SRAM derailleur hanger. Needs from your bike: Derailleur hanger, Rear thru-axle thread and Rear axle threaded portion length.

The SRAM Universal Derailleur Hanger AC-DRHG-UDH-A1 is a derailleur hanger (component). It requires 3 things of a bike — Derailleur hanger, Rear thru-axle thread and Rear axle threaded portion length — read from SRAM. On every bike page its verdict is computed from those requirements against the bike's cited facts: when a fact is missing the answer is "unknown", never a guess.

Requires — Derailleur hangerSRAM UDH (Universal Derailleur Hanger)
Requires — Rear thru-axle threadM12 × 1.0
Requires — Rear axle threaded portion length12.7 mm

Rear thru-axle thread and Rear axle threaded portion length are safety-critical: a wrong answer could hurt you, so we say "fits" only when the bike's fact is confirmed by two independent sources. With one source the honest answer is "unknown"; with none it is "unknown — safety-critical".

Does this part fit my bike?
Find your bike under "Fits these bikes" below, or open your bike's "Rear derailleur" region page. The verdict there is computed from this part's requirements against the bike's cited facts — with its confidence and sources.
What does "does not fit" mean here?
That a fact on file for the bike contradicts a requirement of this part — a confident no, with both values shown.

Standards

  • SRAM UDH (Universal Derailleur Hanger)
  • M12 × 1.0
  • 12.7 mm

Needs from your bike: Derailleur hanger: SRAM UDH (Universal Derailleur Hanger) · Rear thru-axle thread: M12 × 1.0 · Rear axle threaded portion length: 12.7 mm

Derailleur hanger

Find this part

Choose the right variant and check the fit for your bike.

Fits these bikes

Brompton C Line 12-speedunknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Canyon Grail CF SL 7unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Canyon Ultimate CF 7 (5th generation · US build 4612)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Giant Defy Advanced 2 (2025)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Giant Escape 3 (2024)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Giant Fathom 29 2 (2022)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Giant Glory Advanced (2025)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Giant Propel Advanced 2 (2027)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Giant Reign 29 2 (2021)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Giant Revolt Advanced 2 (2025)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Giant Roam 2 Disc (2021)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Giant Talon 2 (2025)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Giant Talon E+ (2026)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Giant TCX Advanced Pro 2 (2023)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Giant Trance X 29 2 (2022)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Giant XTC Jr 24 (2015)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Kona Sutra (2025)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Liv Flourish 2 (2017)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

State Bicycle Co. Core-Line (2024)unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike No derailleur hanger (track, fixed, single-speed, IGH) (single-source) · part SRAM UDH (Universal Derailleur Hanger) — mismatch
  • Rear thru-axle thread (safety-critical): bike nothing on file · part M12 × 1.0 — not on file
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

Surly Disc Trucker 700c (2nd generation (2020 platform))unknown — safety-critical · confidence: single-source We can't answer this yet, and this is one where a guess could hurt you.
Why? The facts we compared (3 dimensions compared)
  • Derailleur hanger: bike nothing on file · part SRAM UDH (Universal Derailleur Hanger) — not on file
  • Rear thru-axle thread (safety-critical): bike M12 × 1.5 (single-source) · part M12 × 1.0 — mismatch
  • Rear axle threaded portion length (safety-critical): bike nothing on file · part 12.7 mm — not on file

Sources:

See all 22 bikes

Sources

The spec sheets we read. Every fact above cites one of them.

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