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NH Movement Rotor - GS 9SA5 - Silver

Many may not know, Grand Seiko 9SA5 movement was one of the best movement ever created by Grand Seiko. Any watch enthusiasts would fall in love with the movement finishing. A marvel and a beauty.

Here is a NH movement rotor, GS 9SA5 in Silver. A mod that can bring the beauty of any NH movement closer to GS 9SA5.

With a sapphire caseback, it is all the reason to beautify the movement and improving the aesthetic. Furthermore, this is a simple and easy mod that requires just screwing and unscrewing of the rotor screw.

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


    1. Quality Swiss Production Quality, ISO 9001 Certified
    2. Colour Silver
    3. Fit Movements 7S26, 7S36, 4R15, 4R35, 4R36, 6R15, NE15, NH25, NH26, NH34, NH35, NH36, NH37, NH38, NH39, NH70, NH71, NH72
  • To allow for CNC decoration, decorated rotor is 0.15mm thicker than SEIKO OEM rotor. Each and every rotors have been tested to fit all our bridges, cases and casebacks perfectly.

    Below is SEIKO's technical drawing , as long as the case and caseback intented to be use is designed with OEM specification as recommended by SEIKO, i.e. there is a 0.4mm gap between the rotor caseback, our rotor will fit just fine. In a scenario where these parts' dimensions deviate from SEIKO OEM, our rotors will be incompatible.

    SEIKO NH34 Rotor and Caseback
    1. 1x NH Movement Rotor

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

  • Recommended Mods With:

    1. NH Movements

Customer Reviews

Based on 11 reviews
Enzo M. (Tinqueux, FR)
Using this mod part for: Seiko 5 SNXS79J1
Mod Seiko 5 SNXS79J1

Pour une première commande je suis très satisfait, produit qualitatif, reçu dans les temps voulu et répond parfaitement a mes attentes. Je l'ai installé sur une snxs79j1 et ça lui va très bien.
Je reviendrais pour de futur mod !

Robert A. (Woodbridge, CA)
Using this mod part for: Hitori Habuka
Nice Change

Great look, although machining on these is abit rough. I find its performance not as smooth as the original rotor.

Still a good step up from a basic NH rotor.

B. (Wynantskill, US)

Works well and excellent fit

Galin (Varna, BG)

Perfect quality and very fast delivery, thank you.

Gang S. (Krakow, PL)
Using this mod part for: RMALTI RM001 White birsh
Rotor GS 9SA5 Silver

The original NH35a rotor was replaced with a custom rotor from Lucius Atelier

Brady P. (Citrus Heights, US)
Using this mod part for: SRDP65P9
Definitely recommend.

Great service, great part. I even got a hand written thank you note on the back of that tag in my picture.Everything was better than expected!

Cory R. (Copenhagen, DK)
Using this mod part for: SRPE
Japanese and proud

Used this rotor for a “restomod” with a vintage 6119 dial, in an SRPE case and brand new parts. Very well made, and gives of a different vibe than the more traditional decorated movements and rotors. It’s parts like this that makes you want to stop copying the Swiss, and start breathing life into something original and unique.

Gar (Udon Thani, TH)
Using this mod part for: GS Case 39mm
Finishing Touch

For a GS build, what could be better than a GS rotor?

Harley (Charleston, US)
Super easy and fun mod

Super easy to install but looks 100 times better than the stock seiko rotor!

Harley (Charleston, US)

Easy to install and amazing quality as always!!