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SRAM GX Eagle rear derailleur, 12-speed

SRAM rear derailleur. Needs from your bike: Rear speeds and Shift actuation. Provides: Rear derailleur max cog.

The SRAM GX Eagle rear derailleur, 12-speed is a rear derailleur (component). It requires 2 things of a bike — Rear speeds and Shift actuation — read from SRAM. It provides Rear derailleur max cog to the parts that mount on it. 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 — Rear speeds12 speeds
Requires — Shift actuationMechanical (cable)
Provides — Rear derailleur max cog52 t
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

  • 12 speeds
  • Mechanical (cable)
  • 52 t

Needs from your bike: Rear speeds: 12 speeds · Shift actuation: Mechanical (cable)

Provides: Rear derailleur max cog: 52 t

Rear derailleur

Find this part

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

Fits these bikes

Canyon Grail CF SL 7 (2025)fits · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 12 speeds (single-source) · part 12 speeds — match
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

Canyon Ultimate CF 7 (2025)fits · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 12 speeds (single-source) · part 12 speeds — match
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

Giant Reign 29 2 (2021)fits · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 12 speeds (single-source) · part 12 speeds — match
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

Giant Revolt Advanced 2 (2025)fits · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 12 speeds (single-source) · part 12 speeds — match
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

Giant Trance X 29 2 (2022)fits · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 12 speeds (single-source) · part 12 speeds — match
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

Brompton C Line 12-speed (2025)unknown · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike nothing on file · part 12 speeds — not on file
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

Giant Defy Advanced 2 (2025)unknown · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 12 speeds (single-source) · part 12 speeds — match
  • Shift actuation: bike nothing on file · part Mechanical (cable) — not on file

Sources:

Giant Propel Advanced 2 (2027)unknown · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 12 speeds (single-source) · part 12 speeds — match
  • Shift actuation: bike nothing on file · part Mechanical (cable) — not on file

Sources:

Giant Escape 3 (2024)does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 7 speeds (single-source) · part 12 speeds — mismatch
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

Giant Fathom 29 2 (2022)does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 10 speeds (single-source) · part 12 speeds — mismatch
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

Giant Glory Advanced (2025)does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 7 speeds (single-source) · part 12 speeds — mismatch
  • Shift actuation: bike nothing on file · part Mechanical (cable) — not on file

Sources:

Giant Roam 2 Disc (2021)does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 9 speeds (single-source) · part 12 speeds — mismatch
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

Giant Talon 2 (2025)does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 9 speeds (single-source) · part 12 speeds — mismatch
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

Giant Talon E+ (2026)does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 9 speeds (single-source) · part 12 speeds — mismatch
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

Giant TCX Advanced Pro 2 (2023)does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 11 speeds (single-source) · part 12 speeds — mismatch
  • Shift actuation: bike nothing on file · part Mechanical (cable) — not on file

Sources:

Giant XTC Jr 24 (2015)does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 7 speeds (single-source) · part 12 speeds — mismatch
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

Kona Sutra (2025)does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 10 speeds (single-source) · part 12 speeds — mismatch
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

Liv Flourish 2 (2017)does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 8 speeds (single-source) · part 12 speeds — mismatch
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

State Bicycle Co. Core-Line (2024)does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 1 speeds (single-source) · part 12 speeds — mismatch
  • Shift actuation: bike Single-speed / fixed (no shifting) (single-source) · part Mechanical (cable) — mismatch

Sources:

Surly Disc Trucker 700c (2024)does not fit · confidence: single-source
Why? The facts we compared (2 dimensions compared)
  • Rear speeds: bike 9 speeds (single-source) · part 12 speeds — mismatch
  • Shift actuation: bike Mechanical (cable) (single-source) · part Mechanical (cable) — match

Sources:

See all 23 bikes

Sources

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

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