Keygeek Butterfly
The Keygeek Butterfly is a 35g lubed linear with a dual-spherical stem and housing design that delivers a deep, rounded, quiet keystroke.
How it feels
How it sounds
thockyFull review
Quick Summary
The Keygeek Butterfly is a factory-lubed 35g linear built around Keygeek’s dual-spherical design — a spherical stem tip meeting a spherical contact point on the bottom housing. The payoff is a deep, rounded, unusually quiet keystroke with a smooth glide that stays out of your way. It’s a strong pick for anyone chasing a muted, thocky linear without stepping all the way into silent territory.
Specs and Feel
This is a clean, uninterrupted linear: no bump, no hint of tactility, just a straight slide from top to bottom. Travel is short of the MX norm, with a 2.0mm pre-travel and a 3.6mm total travel, so bottom-out arrives a touch sooner than you might expect and the switch feels snappy rather than long. The 35g actuation paired with a 40g bottom-out (a 42g/48g variant is also offered) keeps it light and effortless for fast typists, though heavy-handed typers may want the firmer option.
The UPE stem against the PA66 top and PA12 bottom housings glides smoothly out of the box, and the factory lube is applied well enough that scratch is essentially absent. Stem wobble is well controlled — there’s a faint amount of N/S play typical of the price bracket, but nothing that undermines accuracy. The headline trait is the sound: the spherical contact geometry rounds off the bottom-out into a deep, muted thock that’s genuinely pleasant and easy on the ears in a shared space.
Tuning
The Butterfly is happiest left stock — it’s smooth and quiet as shipped, and over-lubing would only mute the deep character that makes it interesting. If you like to tinker, a light pass on the springs to kill any residual ping is the only worthwhile move; films are unnecessary given how well the housings mate.
Verdict
Buy it if you want a deep, rounded, low-noise linear that works straight from the bag. The light 35g weighting and shortened travel make it fast and fatigue-free, and the dual-spherical sound signature gives it a distinct voice that most budget linears can’t match. Heavy typists should reach for the 42g variant, but for everyone else the Butterfly is an easy, affordable recommendation.
Frequently asked
Is the Keygeek Butterfly a quiet switch?
Yes. The dual-spherical contact geometry and rounded bottom-out make it one of the quieter standard linears, with a deep, muted thock rather than a sharp clack. It is not a dedicated silent switch, but it reads as noticeably calmer than most stock linears.
What does the dual-spherical design actually do?
The stem tip is spherical and it meets a matching spherical contact point on the bottom housing. Reducing the flat-on-flat impact softens and deepens the bottom-out, which is the main reason the Butterfly sounds rounded rather than crisp.
Does the Butterfly need lube out of the box?
No. It ships factory lubed and feels smooth as-is, so most builders can use it stock. A light hand-lube on the springs is the only tweak worth considering if you want to chase the last bit of refinement.
Compare Keygeek Butterfly against another switch
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