Full Specifications

Switch TypeTactile
Stem MaterialPOM
Housing MaterialNylon
Spring Type22awg gold-plated
Factory LubedUnlubed
PCB Compatibility5-pin (PCB Mount)
Actuation Force67g
Bottom-Out Force80g
Pre-Travel2mm
Total Travel4mm
Sound ProfileThocky Tactile
Price$5.50 per 10 switches

Editorial Review

The Gazzew Boba U4T has earned a permanent spot at the top of the tactile switch conversation, and for good reason. Designed by Gazzew (also known as Outemu) and sold primarily through KeebsForAll, the U4T delivers a pronounced, tactile experience that places it squarely in the heavy hitter category. The bump is sharp, starts high on the travel, and gives you immediate feedback on every keystroke. This is not a subtle tactile — it is an assertive one.

Sound-wise, the U4T produces a satisfying thock that sets it apart from most tactiles in its price range. The Nylon housing contributes a lower-frequency resonance while the POM stem glides through its travel with minimal scratch. Out of the box, the U4T is one of the cleanest-feeling unlubed switches you can buy. The tolerances are tight enough that most users report little to no stem wobble even without films.

For lubing, the community consensus leans toward a thin coat of Krytox 205g0 on the legs only — applying lube to the bump itself will dull the tactility that makes this switch worth buying in the first place. If you want maximum tactility, leave the legs bone dry and just lube the spring to eliminate ping. A thin application of 3203 is also a popular choice for those who want a slightly smoother experience without sacrificing the bump.

Films are generally not necessary on U4Ts due to the tight housing tolerances, but some users add IXPE or TX films for marginally tighter sound. The switch is a 5-pin PCB mount, so you will need a compatible board or to clip the PCB pins for 3-pin use.

Who is the Boba U4T for? If you type for long sessions, love a strong tactile that communicates precisely when a keypress registers, and want a sound profile that is more thock than clack, this is your switch. Gamers who prefer tactiles over linears will also find the consistent feedback useful. The U4T competes directly with the Holy Panda X and Durock T1 but often wins on value. At $5.50 per 10, it is a rare case where premium feel and accessible price coexist without compromise.

Best Keyboards For These Switches

GMMK Pro

Gasket-mounted aluminum board that amplifies the U4T thock beautifully.

Keychron Q3

Hot-swap gasket mount TKL — ideal pairing for U4T tactility.

Satisfaction75

Premium brass-weight board that rewards the U4T sound signature.

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Where to Buy

NovelKeys
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KBDFans
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Keychron
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Amazon
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Frequently Asked Questions

Do Boba U4Ts need switch films?
Not typically. The U4T housing has very tight tolerances that minimize stem wobble even without films. Most users skip films entirely. If you are chasing absolute perfection in sound consistency, thin IXPE films can make a marginal difference, but it is not a necessary mod for most builds.
Are Boba U4Ts good for gaming?
The U4T is usable for gaming but is primarily a typing switch. The 67g actuation and pronounced bump make rapid repeated keypresses slightly more fatiguing than a linear. Gamers who prefer tactile feedback will enjoy them, but those prioritizing speed or low-actuation force may prefer a lighter linear or a subtle tactile.
How does the U4T compare to Holy Panda?
The U4T and Holy Panda are both sharp, heavy tactiles, but the U4T tends to be more consistent out of the box and is significantly easier to source. Holy Pandas have a slightly rounder bump profile while U4Ts are sharper and more defined. The U4T also tends to be less scratchy stock and is available at a lower price point.