The two variants let buyers choose between a lighter or firmer initial press while keeping the same linear switch design.
Description
Who It's For
Sound Profile
Review Video
Quality Assurance
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Yogurt Series Update
What Changed in the HMX Yogurt S
The HMX Yogurt S is the latest XLLAB Yogurt-series linear switch. Its updated construction keeps the thickened bottom-housing concept while moving to a P7 bottom housing made from PA66 with 50% fiberglass, alongside an improved PA12 top housing and an M1 POM stem.
According to the current product description, the revised top housing is intended to reduce stem wobble while maintaining smooth travel. The Yogurt S is also designed for stronger RGB shine-through than earlier Yogurt versions, making the housing update relevant to both sound-focused and illuminated keyboard builds.
Specification Guide
How the Yogurt S Specifications Translate to Feel
The Yogurt S is offered in two spring-weight options. The confirmed specifications below describe the switch itself; the final feel and sound will still depend on the full keyboard build.
Each option increases in resistance toward the end of travel, with the 45–53G variant providing the firmer bottom-out.
The listed pre-travel is the distance before actuation. Actual keyboard response also depends on the PCB, firmware and complete build.
The compact full travel is paired with a 22mm KOS single-stage extended spring for the intended return characteristics.
Factory Lubrication
A Controlled Factory-Lube Application
HMX applies lubricant only to selected contact areas instead of coating the entire housing. The current product specification lists a very thin coat of 205g0 on the stem legs and stem sliders, with dry-film lubrication on the spring and leaf.
- Stem legs and stem sliders receive a very thin coat of 205g0.
- The spring and leaf use dry-film lubrication.
- The bottom housing is kept dry.
- The area around the stem pole is also kept free of lubricant to reduce the chance of lube pooling.
Sound, Weight & Build Fit
Who Is the Yogurt S Most Likely to Suit?
The current product page describes the Yogurt S as clean, clacky, loud and high pitched. Combined with its two spring-weight options, it is positioned for users who want an expressive linear switch rather than a quiet or heavily muted setup.
May Suit
- Enthusiasts looking for a clean, clacky and high-pitched linear sound.
- Typing and gaming builds where an audible switch is acceptable.
- Users who want a choice between lighter 37–43G and firmer 45–53G spring options.
- RGB-focused builds that can benefit from the Yogurt S housing update.
May Not Suit
- Quiet offices, shared rooms or late-night setups where low sound output is important.
- Users specifically looking for a deep, muted or silent switch profile.
- Anyone who wants a tactile bump or click mechanism.
- Buyers who prefer only one fixed spring weight and do not want to choose between variants.
Before You Order
Pack Size and Spring-Weight Selection
One quantity contains 10 switches. The product page currently offers two spring-weight choices: 37–43G and 45–53G. Choose the preferred weight first, then calculate how many 10-switch packs are required for the full keyboard layout.
The current specifications do not make a universal keyboard-compatibility claim. Before ordering for a complete build, compare the product photos and switch format with the PCB, plate and mounting requirements of the specific keyboard.
Ordering note: Each cart quantity equals 10 switches. A full keyboard build normally requires multiple quantities, so count the required switch positions and allow for spare switches if desired.
Product Questions
HMX Yogurt S Linear Switch FAQ
Is the HMX Yogurt S a linear switch?
Yes. The Yogurt S is a linear mechanical keyboard switch, so its keypress is designed without a tactile bump or click mechanism.
What is different about the Yogurt S compared with earlier Yogurt switches?
The current product description highlights three updates: a P7 bottom housing with more fiberglass, an improved top housing intended to reduce stem wobble while maintaining smooth travel, and improved RGB shine-through. It also uses HMX's newer factory-lubing method.
What sound profile should I expect?
The product page describes the Yogurt S as clean, clacky, loud and high pitched. Actual sound will also vary with the keyboard case, plate, keycaps, mounting system and other build components.
What spring-weight options are available?
The page lists two variants: 37–43G and 45–53G. Their specified operating forces are 37±2g and 43±2g, while their bottom-out forces are 43±2g and 53±2g respectively.
What materials are used in the HMX Yogurt S?
The confirmed specifications list an M1 POM stem, a PA12 top housing and a P7 bottom housing made from PA66 with 50% fiberglass.
Is the HMX Yogurt S factory lubed?
Yes. A very thin coat of 205g0 is applied to the stem legs and stem sliders, while the spring and leaf use dry-film lubrication. The bottom housing and the area around the stem pole are kept dry.
How many switches are included per quantity?
Each quantity contains 10 switches. Choose the spring-weight variant first, then order enough 10-switch sets to cover the keyboard layout.
Is the Yogurt S suitable for gaming and typing?
The current product page positions the switch for both typing and gaming. The better choice between the two spring weights depends on the user's preferred keypress resistance and sound tolerance.
Customer Reviews
Overall rating: 5.0 / 5 from 52 reviews.
Great switch, i would describe the sound as a bright thud / thuddy clack. Removing the switches from an alu plate can be kinda difficult compared to other switches, so i sort of wonder if the little tabs that hold the switch in will break after a while. As per usual with hmx, i don't feel like I need to do any sort of modding. Build: Neo65 Core Plus, GMK, PP plate, O-ring Mic: Rode NTG1 (approx 30cm away), Focusrite 2i2 3rd gen
A really nice and full clack. Extremely smooth and good right out of the box.
These have actually been very satisfying to use and hear on my Lucky65 v3. Originally had capybara switches on them but found that these Yogurt S switches were just more fitting for this keyboard. Love the Clacky and Louder sound signature these have!
The Yogurt S V2s live up to the hype! Incredibly smooth, with a great clack! Pretty happy with these!
Pretty well known switches already but for sure one of the best recently: bright, full and they even offer 2 spring options. For me it's a must pick if you like this kind of sound signature.
Great-sounding switch, wonderfully light and pleasant to type on.
Great-feeling switch with a full, clacky sound profile! Sounds great with GMK keycaps.
These are my first clacky switches! I was a bit nervous that they might be toooo clacky, but they are actually perfect. Very smooth to type on, with a satisfying clack and pop. Just enough resistance when typing, too--I don't like weak switches. I'm using on paragon aluminum keyboard!
Foamless Monsgeek m1 v5 tmr, somehow works due to the tmr one having a 1.6mm non flexcut pcb, i do think the hmx yogurt S absolutely carries it but its a good foamless option, this is probably also the smoothest, fullest and brightest sounding switch i have used ever, and honestly would love to move it out of this monsgeek into something hyper clacky!
Amazing switch. The sound is perfect, and I would definitely recommend picking it up
One of the smoothest switches I've tried. It's not that thin compared to other HMX switches. Satisfying to type on and sounds great.
Great switches. Extremely high pitched and clacky.
This switch is incredibly well-made—it honestly makes me think, "If you're on the fence, you might as well just use this for everything." Right now, I'm using it with a PC plate and foam, but I feel like it would pair perfectly with any combination.
The switches were great! Built 9 different keyboards.
beautifully refined switch with a bright, clean clacky -pop
Great sounding
sound nice 👍
If you already have the yogurts v2, DO NOT buy these, they are the same thing. There is little to no difference. However if you don’t have any yogurts, yeah these are great!
Good!!!
Very full, loud, and clacky switches! These are wayyyy better than the Yogurt V1s and are probably the best Hmx switch I've tried on my neo65cu so far.
Just buy ‘em’ so good!
One of the best CLACK Monster in HMX Line Up. Each Keystroke produce distinctively Bright High Pitch Sounding Experience. its like typing on Ice Glass. Trying in on my TKD Cycle 7 with Carbon Fiber Plate and Im Truly Impressed with it! Sound Wise, This Banger Switch deliver a More Aggressive Clack conpared to earlier version.
Super loud on aluminium, tight and smooth.
That switch 100% holds up to its hype. For HMX a rather deep switch with a very good amount of clack. That switch is probably switch of the year.
Smooth and clacky. Not much else you can ask for.
I bought them because of the hype and i fricking love them. They're my new favourite switch
Perfect
Best switches ever
best switch of the year
Great, already found their permanent home
good
goated switches
I chose the heavy spring and regret it. My fingers fatigue after a long time typing
Arrived very quickly and sound is as clacky as I desired.
Amazing switches
They are a dream to type on and sound fantastic
Most premium feeling and sounding clacky switches
Love those switches
Clack perfection
Best hmx switches