STRONGLIGHT 23mm Crank Dust Cap 49D Super Compétition Forged Dural

The STRONGLIGHT 49D Super Compétition dust cap is a small but defining component for a vintage crankset. Machined from forged dural, it carries the 23 mm diameter that corresponds to the crank dust cap interface. The reference 49D identifies this specific STRONGLIGHT production.

Period-correct crank finishing detail

On a restoration, the dust cap is one of those parts that immediately dates a bottom bracket assembly. This STRONGLIGHT cap keeps the visual language of a Super Compétition groupset coherent. The aluminium construction and 23 mm diameter are the core data points for fitting checks.

Key specifications

• Country of origin: FRANCE
• Material: Aluminium
• Dust cap diameter: 23 mm

Used condition is to be expected. The photos form part of the description and should be reviewed for the exact state of the piece. For those assembling a complete STRONGLIGHT drivetrain, a matching STRONGLIGHT Competition bottom bracket provides the corresponding anchor point.

For a broader view of the crank area, the Vintage Bicycle Dynamo category can be a useful cross-reference, while a set of MAVIC 500 RD hubs gives a coherent French component pairing for the same era.