MV Photo Credit: LightningXL
On October 30, 2025, FKcaps announced the launch of URSA Keycaps on their official Discord channel.
URSA Keycaps is a keycap set that was available for group buy at Yushakobo from April 21, 2024.
The main feature is that they are “keycaps exclusively for capacitive non-contact switches.”
In other words, they are essentially third-party keycaps for “HHKB” and “Realforce.”
In this article, we’ll explain about the URSA keycaps.
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Find a keyboard layout you like.
FKcaps “URSA Keycaps” Now on Sale | JIS (Japanese Layout) Support Planned for the Future
For capacitive non-contact switches, these and Domikey might be the only compatible keycaps available.
URSA keycaps are designed for Topre switches and feature the rare combination of double-shot PBT and a newly designed profile.
The convex bottom row design and 6° slope aim to optimize the feel for the short stroke of HHKB and Realforce.
While not currently supporting JIS, making them unsuitable for Japanese layout users, they seem to be a strong option for HHKB/Realforce users with English layouts.
KawamuraApparently, a Japanese layout is also in the works.
It’s “definitely on the roadmap,” so let’s wait for further updates.
FK’s Simon has always been considering the Japanese market since I first met him.
The key profile seems to be slightly higher, with a “high profile” specification.
The most distinctive feature is probably the shape of the top surface.
While regular HHKB and Realforce have a Cherry profile-like cylindrical style (shaped like a cylinder cut into an arc), URSA has a “spherical design style” that curves inward towards the center.
The keycaps are made of PBT material, with double-shot legends, and are of course compatible with “Topre switches.”
This might be a model with HHKB Sumi replaced.
It looks super cool.
This is a Realforce, isn’t it?
The accent keycaps are also cool.
Main Features and Specifications
- Exclusive for Topre switches (not MX compatible): For Topre sliders like HHKB / Realforce / Leopold.
- Material: PBT, double-shot, 1.5mm thick. Emphasis on texture and durability.
- Profile: Deep spherical dish, flat top edge, slightly convex side walls, bottom row is convex for improved thumb operation precision and comfort. Row angle is about 6°.
- Layout support: Currently JIS/ISO not supported (planned for future support).
Compatible Keyboards (Excerpt)
- HHKB: Pro / Pro2 / Classic / Hybrid
- Realforce: 84U / 86U / 87U / 104U / R2 TKL / R3 TKL
- Leopold: FC660C (also FC980C, Type Heaven, etc.)
Note: For Realforce 87U‘s left 1.5u Ctrl (rotated stem), a dedicated key is included in the Extension kit. No modification needed.
Kit Configuration and Color Variations
- Kits: Alphas / Mods / Spacebar / Extension / Blanks, etc., Base (= Alphas + Mods) is also available.
- Colors: Black / Classic / Minicom / Blue / Red, etc. (stock status may vary).
Price
There’s no price difference between colors.
| kit | Price (USD) | Purpose / Content | Notes |
|---|---|---|---|
| Base (= Alphas + Mods) | $80 | Covers a full set for HHKB / FC660C | For ANSI English layout. Colors include Black / Classic / Minicom, etc. |
| Extension | $40 | Additional keys for TKL/full-size | Extends Realforce 87U/104U, R2/R3 TKL, FC980C, etc. |
| Blanks (no legends) | $60 | 132-key blank set | Equivalent to ANSI full. Cost-effective option. |
| Spacebar | $6 | 6u size | |
| Accents | $8 | Accent colors (red/blue) for Esc + Enter | Newly added during Extras. |
| Alphas | $50 | English alphabet section only | |
| Mods | $30 | Modifier keys only | Also available in different colors like red/blue Mods. |
Purchase Notes
- URSA cannot be combined with other products (don’t mix in the same order).
- Shipping time: Pre-orders will be shipped first, followed by extra stock. Shipping by the end of November at the latest.
- Shipping: From China. Initial batch for EU/US will be DDP (duties and taxes prepaid). Shipping via SF Express, tracking numbers provided for all orders.
keystroke sound
A typing sound sample, likely from a non-Type-S HHKB Classic, has been released.
Potential for popularity in synergy with HHKB Classic Type-S
That’s all about the “URSA Keycaps” released by FK.
As we’ve covered in this media, a silent model of the Classic version of HHKB was released on October 21.
This release from FK, combined with the HHKB release, is expected to create a synergistic effect.
If you’re interested, definitely give them a try!
English Summary
FKcaps has started selling URSA Keycaps—a rare double-shot PBT set designed specifically for Topre switches (HHKB/Realforce/Leopold). URSA uses a new high-profile sculpt with a deep spherical dish, ~6° row tilt, and a subtly convex bottom row to suit Topre’s shorter travel. Current kits target ANSI layouts (JIS/ISO not yet supported), but JIS is on the roadmap. Thickness is about 1.5 mm; compatibility covers HHKB Pro/Classic/Hybrid and many Realforce TKL models, with an extension key for RF 87U’s 1.5u Ctrl. FKcaps announced the sales launch on Oct 30, 2025 (JST) via its official Discord.
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