Rear derailleur parts for the Surly Disc Trucker 700c (2nd generation (2020 platform))

Parts menu — 4 parts

• microSHIFT ADVENT medium-cage clutch rear derailleur, 9-speed

  Rear derailleur

  unknown · confidence: single-source

  • Rear speeds : 9 speedsCheck your installed setup or its technical sheet.
  • Shift actuation : Mechanical (cable)Check your installed setup or its technical sheet.
  • Rear shifting actuation family : microSHIFT ADVENT 9-speed shifter actuationCheck your installed setup or its technical sheet.
  Why? The facts we compared (3 dimensions compared)

  • Rear speeds: bike nothing on file · part 9 speeds — not on file
  • Shift actuation: bike nothing on file · part Mechanical (cable) — not on file
  • Rear shifting actuation family: bike nothing on file · part microSHIFT ADVENT 9-speed shifter actuation — not on file

  Sources:

  • microSHIFT — ADVENT Medium Cage Clutch Rear Derailleur — RD-M6195M (tier 1, read 2026-08-21)
  • microSHIFT — ADVENT Medium Cage Clutch Rear Derailleur — RD-M6195M (tier 1, read 2026-10-07)
  • microSHIFT — ADVENT Medium Cage Clutch Rear Derailleur — RD-M6195M (tier 1, read 2026-10-07)

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• SRAM GX Eagle rear derailleur, 12-speed

  Rear derailleur

  unknown · confidence: single-source

  • Rear speeds : 12 speedsCheck your installed setup or its technical sheet.
  • Shift actuation : Mechanical (cable)Check your installed setup or its technical sheet.
  • Rear shifting actuation family : SRAM X-ACTUATION mechanical 12-speedCheck your installed setup or its technical sheet.
  Why? The facts we compared (3 dimensions compared)

  • Rear speeds: bike nothing on file · part 12 speeds — not on file
  • Shift actuation: bike nothing on file · part Mechanical (cable) — not on file
  • Rear shifting actuation family: bike nothing on file · part SRAM X-ACTUATION mechanical 12-speed — not on file

  Sources:

  • SRAM — GX Eagle Rear Derailleur — RD-GX-1-B2 (tier 1, read 2026-10-07)
  • SRAM — GX Eagle Rear Derailleur — RD-GX-1-B2 (tier 1, read 2026-10-07)

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• SRAM Rival eTap AXS rear derailleur, 12-speed

  Rear derailleur

  unknown · confidence: single-source

  • Rear speeds : 12 speedsCheck your installed setup or its technical sheet.
  • Shift actuation : SRAM AXS (eTap)Check your installed setup or its technical sheet.
  Why? The facts we compared (2 dimensions compared)

  • Rear speeds: bike nothing on file · part 12 speeds — not on file
  • Shift actuation: bike nothing on file · part SRAM AXS (eTap) — not on file

  Sources:

  • SRAM — Rival eTap AXS Rear Derailleur — RD-RIV-E-D1 (tier 1, read 2026-08-21)

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• SRAM Universal Derailleur Hanger AC-DRHG-UDH-A1

  Derailleur hanger

  Fit checks required · confidence: single-source Compatibility is not confirmed. Verify the listed mounting requirements before buying or installing this part.

  • Derailleur hanger : SRAM UDH (Universal Derailleur Hanger)Check your installed setup or its technical sheet.
  • Rear thru-axle thread : M12 × 1.0Check your installed setup or its technical sheet.
  • Rear axle threaded portion length : 12.7 mmCheck your installed setup or its technical sheet.
  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:

  • SRAM — Universal Derailleur Hanger user manual — page 5 installation requirements (tier 1, read 2026-09-28)

  View specifications →