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SKX013 Brushed Black Chapter Ring - GMT 24H Numerals

A brushed black chapter ring with white 24 hour numerals and minute markers designed specifically for the replacement of SEIKO SKX013 original plastic chapter ring or for use on our cases. An excellent cosmetic enhancement to create a unique visual.

Recommended for use with GMT NH34 Movement.

Dimension of this chapter ring has been customised for greater clearance, perfect fitting and pairing of our dials onto SKX013.

Made exclusively for us with quality assurance by ISO 9001 Certified manufacturers.


    1. Quality Swiss Production Quality, ISO 9001 Certified
    2. Material Brass
    3. Surface Finish Brushed
    4. Colour Black
    5. Hour Markers White, GMT 24H
    6. Minute Markers White
    7. Dimension Half the size of OEM for greater clearance
    8. Outer Diameter 28.5mm
    9. Inner Diameter 26.5mm
    10. Pin Stabiliser* No
      * SKX013 original plastic chapter ring has a protruding pin at the base to stabilise the alignment of its hour and minute markers to the watch dial. You will need to manually align and adhere this chapter ring to the dial
    11. Fit Diver's Watch Case - 38mm, SKX013, SKX015, SKX017 and all 7S26-0030 Watch Cases
    1. 1x Chapter Ring

    All photos of watches with modification parts are for illustration purposes only and are not included with modification parts purchased.

  • Recommended Mods With:

    1. GMT 24H Watch Mod Parts

Customer Reviews

Based on 4 reviews
Alfie (Muswell Hill, GB)
Using this mod part for: SKX013
Great product

Really pleased to find Lucius Atelier makes these for the SKX013 size, among other mods of course. Few other outlets are developing anything new for these watches nowadays so it can be hard to find what you want, but the quality doesn't disappoint and I'll definitely come back in the future for all my 013 needs.

Anh (Minneapolis, US)
Using this mod part for: SKX013
High quality part

This is one of the few 24 hour chapter ring I could find for an SKX013 case. I appreciate the fact that it has a wide clearance for a wider variety of dials to be used. However, the tradeoff of that is the fact that you'll have to tilt the watch a little to see where the GMT hand is pointing. I wonder if the chapter ring could be a bit wider to solve this issue. This may mean that Lucius Atelier needs to produce an SKX013 dial line :)

Fay's (Marseille, FR)
Using this mod part for: Skx013

Produit de qualité et livraison très rapide

Prakash W. (Chattanooga, US)
Using this mod part for: SKX0013
Exactly as advertised

Quality part and outstanding customer service. I will definitely shop here again.