Thin mod parts with classic proportions

For actual watch enthusiasts
Seiko compatible parts
6 Months warranty on parts
Free shipping over $100

Latest from Our Blog

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Frequently Asked Questions

Use this section for any descriptive text you need to fill out your pages or to add introductory headings between other blocks.

A Seiko mod is a custom watch built using a Seiko or NH movement combined with aftermarket parts such as cases, dials, hands, and crystals. Mods can be bought prebuilt or created by DIY modders.

Yes! We offer both Seiko Modding parts and pre-built watches. We can also tailor a watch to your liking with our existing parts.

A Seiko mod is a custom watch built using a Seiko or NH movement combined with aftermarket parts such as cases, dials, hands, and crystals. Our watches are not meant to imitate original Seiko watches, and we have no affiliation with them.

Yes, we ship worldwide!

Our Complete Seiko Mods are water proof guaranteed. Check the description for its specifications.

Our parts are water proof given the gaskets are installed correctly, and all parts are screwed all the way down.

A Seiko mods water resistance can vary for various reasons such as quality of assembly, specs of parts, and more.

Of course! We offer a 30-day return policy. Read more about our return policy at the bottom of the page.

Still have questions?
Contact our support team

The Seiko Mod Parts Store for Enthusiasts

Nomods is a dedicated Seiko mod parts store built by watch enthusiasts, for watch enthusiasts. Whether you are building your first Seiko mod or refining a collection of custom timepieces, we carry everything you need — from cases and dials to hands, movements, and straps.

Our Seiko mods draw inspiration from iconic watch designs. The Nautilus collection pairs clean lines with sapphire crystals and Seiko NH movements for a refined everyday watch. The Royal Oak collection captures octagonal geometry in both 37 mm and 41 mm case sizes, complete with integrated bracelets. And the Petrichor collection offers a compact, classically proportioned alternative for those who prefer understated design.

Every part we sell is designed to work with standard Seiko NH35, NH36, and NH72 movements — genuine Seiko Instruments calibres trusted by modders worldwide. We test fitment across our full range so cases, dials, and hands work together without guesswork. If you want a ready-to-wear piece, our complete Seiko mods ship fully assembled and pressure-tested.

Not sure where to start? Our build guide walks you through the entire process, and our best Seiko mods of 2026 roundup highlights the most popular builds this year. We ship worldwide from Europe with tracked shipping on every order.