part · switch

Cherry MX2A Red

Spec sheet

Type: Linear
Top housing: Nylon
Bottom housing: Nylon
Stem: POM
Spring: 45g actuation · 75g bottom-out
Travel: 4 mm
Factory lubed: yes
Released: Aug 24, 2023

Cherry's redesigned MX Red with a factory grease ring chemically similar to Krytox 205g0 and tighter stem tolerances. Smoother and quieter than the legacy MX Red while keeping the same 45g actuation and 100M-actuation lifespan.

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Mentioned in 8 articles

Ideas

Parts pairing for a split build: two independent halves, two independent decisions

A split board is two keyboards that happen to share a keymap. Most builders still buy parts for it like it's one — matching switches, ordering a single sculpted keycap set, and never touching the left half's tuning differently from the right's.

thockAug 26, 20269 min read

Split cross-section line drawing of a mechanical switch. The left half shows a stem with elastomer pads on the foot of its legs and the top of its rails, picked out in a dusty-rose splash; the right half shows a housing with a dampening ring seated at the floor. Rendered in a single warm-grey stroke with a brass-bronze theme dot at the upper right.

Deep Dives

What a silent switch actually silences — and what it can't

Every keystroke lands twice — once on the floor, once on the ceiling. Cherry molds an elastomer pad onto the stem to catch both; Gazzew fits a silicone one. The undamped Boba U4T shows what either approach is buying — about 14 dB on one tester's meter — and what it costs in travel, rebound, and a bump with nowhere left to go.

thockAug 19, 202610 min read

MX-style switch exploded cross-section: a keycap lifted above the top housing, the stem crown showing through the housing's opening, the stem shaft descending through a slotted foam pad wrapped around it at mid-housing height, spring coils beneath the pad, and a PCB strip below.

Ideas

The Holee mod: what foam inside the switch actually buys you

Small pads of polyurethane foam cut and wedged inside the switch housing itself — not under the PCB, not behind it, not under the keycap. The Holee mod works at a smaller scale than every other foam mod in the hobby, and it costs proportionally more time.

thockJul 31, 20268 min read

Cherry MX2A switch cross-section, side view — top housing with stem hole, cruciform-mount POM stem column drawn in cherry-red splash, 5-coil spring, bent-leaf contact, and bottom housing with pin contacts; a thin dashed callout traces from the stem-housing interface to a magnified circular inset showing the new factory grease ring with scattered lube dots.

Deep Dives

What Cherry's MX2A revision actually changed

Cherry's MX2A landed in 2023 with a real engineering update — factory lube, tighter tolerances, the same 100M-press lifespan. The reason the discourse cooled isn't that the switch failed; it's that the enthusiast slot it aimed at was already claimed by the time it arrived.

thockMay 10, 20268 min read

Exploded-axonometric silhouette of a mechanical keyboard switch on a dark background — top housing, stem, spring, and lower housing separated by thin gap lines, with a single soft-coral accent dot anchoring the stem.

Deep Dives

How HMX took over the mid-tier linear slot

Two years ago HMX was a name on a vendor page nobody pronounced confidently. In W19, the Cloud sat second among switches on our tracker and landed in half the $120 prebuilts the scene argues about. The rise wasn't an accident.

thockMay 10, 202613 min read

Guides

Lubing 101: what matters, what doesn't, and where to stop

Lube moves the sound and feel of a switch in ways nothing else in the build can. It also chews up a Saturday and ruins switches when applied with the enthusiasm the rabbit-hole crowd recommends. Here is the version that earns its keep.

thockApr 30, 20269 min read

Guides

Switch housings, compared: nylon, polycarbonate, POM, and the rest

The housing line on a switch spec sheet is the second-most-important thing about a switch, after the type, and most buyers skim past it. Material decides how the switch rings, how the stem rails feel under a finger, and how much grace it gives a bad lube job. A 'PC top, nylon bottom' tag is doing more work than its three words suggest.

thockApr 21, 202610 min read

Cross-section diagram of a switch housing showing where a film sits between top and bottom housing

Ideas

Switch films: do they actually do anything?

Thin POM shims between your switch housings cost five dollars and promise a tighter, better-sounding switch. The mechanism is real. Whether it matters on your specific switches is a separate question.

thockApr 13, 20268 min read

Cherry MX2A Red appears in editor-curated build sheets.

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