Is Shimano 105 DUAL CONTROL LEVER 2X12s compatible with Shimano GRX REAR DERAILLEUR 12s (FOR 11-34/36T)?

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Not Compatible

high confidence

Issues found between Shimano 105 DUAL CONTROL LEVER 2X12s and Shimano GRX REAR DERAILLEUR 12s (FOR 11-34/36T)

Notes & Caveats

  • Front speed mismatch: 105 DUAL CONTROL LEVER 2X12s (2x) is not compatible with GRX REAR DERAILLEUR 12s (FOR 11-34/36T) (1x)
  • Front speed mismatch: GRX REAR DERAILLEUR 12s (FOR 11-34/36T) (1x) is not compatible with 105 DUAL CONTROL LEVER 2X12s (2x)

Part A

Shimano 105 DUAL CONTROL LEVER 2X12s

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Part B

Shimano GRX REAR DERAILLEUR 12s (FOR 11-34/36T)

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Frequently Asked Questions

Can I use Shimano 105 DUAL CONTROL LEVER 2X12s with Shimano GRX REAR DERAILLEUR 12s (FOR 11-34/36T)?

No — Shimano 105 DUAL CONTROL LEVER 2X12s and Shimano GRX REAR DERAILLEUR 12s (FOR 11-34/36T) are not compatible. Front speed mismatch: 105 DUAL CONTROL LEVER 2X12s (2x) is not compatible with GRX REAR DERAILLEUR 12s (FOR 11-34/36T) (1x) Front speed mismatch: GRX REAR DERAILLEUR 12s (FOR 11-34/36T) (1x) is not compatible with 105 DUAL CONTROL LEVER 2X12s (2x) Always confirm the exact specs before buying.

Do Shimano 105 DUAL CONTROL LEVER 2X12s and Shimano GRX REAR DERAILLEUR 12s (FOR 11-34/36T) use the same number of speeds?

Yes, both are 12-speed components. Matching the speed count is the single most important drivetrain requirement — the cassette spacing and cable pull are designed around it.

Are Shimano 105 DUAL CONTROL LEVER 2X12s and Shimano GRX REAR DERAILLEUR 12s (FOR 11-34/36T) the same shifting type?

Yes, both are mechanical (cable-actuated). The cable pull ratio must still match between brands and generations for precise shifting.

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