Siliworks x HMX Sonja Linear Switches
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Full nylon housing — top and bottom. The Sonja has a sound signature most switches can’t replicate: deep, dense, with almost no ping or sharpness. A 22mm KOS extended spring and POM stem. Factory lubed from the factory.
Express Shipping
30-Day Returns| Type | Linear |
| Manufacturer | HMX × Siliworks |
| Actuation Force | 45g (±2g) |
| Bottom-Out Force | 52g (±2g) |
| Pre-Travel | 2.0mm |
| Total Travel | 3.9mm (±0.2mm) |
| Top Housing | PA66 Nylon — textured |
| Bottom Housing | PA66 Nylon |
| Stem | POM |
| Spring | 22mm KOS single-stage extended |
| Factory Lube | Yes — GPL105 + GPL205 |
| Mount | 5-pin PCB |
- 5-pin PCB mount — fits any 5-pin hot-swap board. Clip the two side pins for 3-pin (plate mount) keyboards.
- Full PA66 nylon housing top and bottom — nylon absorbs more sound than polycarbonate, producing a deeper, more muted tone with less ping. If you want a keyboard that sounds full and dense rather than sharp and bright, the Sonja is built for that.
- The textured top housing is not purely cosmetic — it contributes to the Sonja's distinctive muffled-but-defined sound signature by dampening high-frequency resonance inside the switch.
- 22mm KOS extended single-stage spring provides a smooth, consistent weight curve from top to bottom with no sudden stiffness increase near the end of travel.
- Factory lubed with GPL105 on leaf and stem feet, GPL205 on housing rails — ready to install immediately.
- MX footprint — compatible with all standard MX keycaps and hot-swap sockets.
- Ships within 1 to 3 business days. Tracking sent by email.
- Free shipping on orders over $105. Ships globally.
- Not happy? Email support@ikogai.com and we will make it right — full refund or exchange.
Let customers speak for us
Love the new mousepad. Alway wanted a bigger one and randomly finding this off an instagram ad was definitely fate at work. It compliments my set up and with the free key cap to boot was the cherry on top. 10/10 definitely recommend!
My current setup. This mat does not disappoint!!
Thank you so much for making this product. I’ve been a lover of Hokusai’s art for years and years, and this mat really ties my whole experience together.
THANK YOU! I just finished my set up today after waiting for the mouse pad and fortune key bind. I love it. It completes the set up and I can’t wait to keep building upon it. THANKS AGAIN!!!
It’s a great high quality mousepad and it gives the setup a lot more life and character I feel. Thanks for the great support as well. Going above and beyond without the expectation of anything in return is a rare commodity.
Cheers
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My god... You've smashed it out of the park with the quality of the print and the design. Posted up on Instagram before I scanned the code but I tagged you in it. Keep up the good work. Thanks, Martin
I got this for my friend’s birthday. When he opened it, I could tell by his face I'd nailed the perfect gift.
He's always been into Japanese culture, so I chose The Dragon King mousepad. The moment he saw it, he spent 10 minutes just appreciating all the intricate details.
The artwork is genuinely beautiful. Every detail is perfect, and you can instantly feel the premium quality just by touching it (much better than other Amazon mousepads I got in the past).
He sent me a pic of his desk set-up and he absolutely loves it. I was worried about the size but it actually fits great on his desk. Even after 2 months it still looks brand-new (no fading, no fraying edges, nothing).
They shipped this all the way back to Italy and it arrived in perfect conditions. They even sent me a Ikogai bag for the mousepad.
Completely worth it.
The mat looks great
I just received my mousemat and it is a fantastic addition to the smaller Japanese accents in my office. I do basic biomedical research using zebrafish to study cardiovascular development and disease, so this mat is perfect!
Love the new mouse pad is great quality and the print is very detailed
My current set up with my new mouse pad and key cap! Love it
I recently purchased a mousepad with the topographic styling. I love this as I’m studying to be an architect and topography is something which is critical when designing! It’s symbolic of the journey I’m on. I was first drawn to the ikogai as I love traditional Japanese art, I have it on my wall and tattooed on my arm and leg! The mousepad is very high quality from the feel to the print. I’ll be purchasing some wall scrolls soon for sure! Highly recommend the mousepads!
Common Questions
Everything you need
to know
Full PA66 nylon housing — top and bottom. Most premium linears use polycarbonate on top, which gives a brighter, sharper sound. Nylon absorbs more of that high-frequency resonance, producing a deeper, denser tone. The textured top housing adds another layer of dampening. The result is one of the most muted, full-sounding linears available without needing foam or tape mods.
Primarily typing and long sessions. 45g actuation is light, 2.0mm pre-travel is standard, 3.9mm total travel is slightly longer than most — the Sonja rewards a deliberate typing style and sounds exceptional on every keystroke. It is usable for gaming but not optimised for ultra-fast actuation the way a 0.9mm pre-travel switch like the Raptor MX Extreme is.
No — they come factory lubed with GPL105 and GPL205 and are ready to install. If you want to push further, a thin application of 205g0 on the stem rails will make an already smooth switch even silkier. The nylon housing does not need lubing — it is naturally lower-friction than polycarbonate.
KOS (Keep On Spring) is HMX's extended-length spring format — at 22mm it sits longer inside the switch than a standard spring. Longer springs have more room to compress gradually, which reduces the sudden weight spike some switches have near bottom-out. The Sonja's weight curve is smooth and even from first contact to the end of travel.
Yes. Standard 5-pin MX footprint. Clip the two small side pins for 3-pin plate mount boards. Compatible with all standard MX hot-swap sockets and MX keycaps.
100% full-size — up to 110. TKL (80%) — around 87. 75% layout — around 84. 65% — around 68. 60% — around 61. When unsure, order one size up — unused switches keep indefinitely.
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