Merida Silex 400 derailleur hanger: identify DH-054 in the parts panel

A Merida Silex 400 derailleur hanger is a frame-related part, so the rear derailleur's GRX label is not enough to identify it. The useful reference is the appropriate frame drawing and its accompanying parts list. Merida's selected archive includes a small panel that distinguishes the hanger from adjacent axle hardware and fasteners.

Locate the Merida Silex 400 derailleur hanger reference

The spare-parts panel currently presented with the selected archived Silex 400 entry lists item A2311000062 as RD-HANGER DH-054 for ROAD-RD. Record both the item number and the description. The drawing attached to this panel is labelled for SILEX LITE MY21, which is an important document identifier to retain when a dealer checks whether it applies to the actual frame.

That attached drawing is not evidence that every bicycle called Silex 400 uses this part. The accompanying October 2021 photograph records a historical Silex 400, while the archived build specification lists a blue colourway. Confirm the frame identity and applicable drawing before treating the panel as an order. A capture date does not resolve a production edition or a previous owner's modifications.

Keep neighbouring hardware out of the hanger identity

The same panel separately lists a rear-axle nut, cable guide and several screws. A number beside the hanger in a diagram may describe another component. Copy the complete row and drawing position rather than selecting the first number visible around the rear dropout. Ask which associated hardware is supplied with a replacement and which pieces must be ordered separately.

The wording for ROAD-RD should also remain part of the enquiry. It is not a blanket compatibility claim for every rear derailleur or a permission to substitute another hanger with a similar outline. Establish the frame-side fit and the intended derailleur arrangement through the applicable parts information and supplier confirmation. Shared Silex or Shimano branding cannot replace that check.

Separate selecting a part from assessing the repair

Send a dealer the bicycle's identifiers, the complete relevant drawing, a clear picture of the rear dropout and the existing part's markings if available. Explain whether the part is missing, visibly damaged or simply being purchased as a spare. Keep a claim of a particular failure separate from a photograph that only establishes appearance.

A correct reference number does not show whether surrounding components are undamaged or whether alignment and shifting are correct. Have the actual assembly assessed when damage or malfunction is involved, and follow the exact fitting instructions rather than copying a torque from another row. This reference deliberately does not prescribe installation, straightening or a derailleur conversion. Its purpose is to make the replacement request specific enough to verify.

FAQ

Is DH-054 selected by the GRX name alone?

No. Verify the frame and applicable drawing as well as the intended derailleur arrangement.

Does the archive list the hanger separately from the axle nut?

Yes. They are different entries and should remain separate parts in an enquiry.

Does buying the listed hanger complete a damage assessment?

No. Component selection and the condition, alignment and operation of the actual assembly are separate questions.

Continue with the separate axle-identification reference or browse the Merida topic.

Sources: Merida archived Silex 400 specification.