• HMX Rain Rail Bottom-Out Linear Switch, front view
  • HMX Rain Rail Bottom-Out Linear Switch components
  • HMX Rain Rail Bottom-Out Linear Switches
  • HMX Rain Rail Bottom-Out Linear Switches, arranged
1 / 1
HMX

HMX Rain Rail Bottom-Out Linear Switch Factory Lubed (10PCS)

5.0(2 reviews)
$3.80 USD
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Bottom Out Force: 53g
HMX Rain Rail Bottom-Out Linear Switch, front view
$3.80 USD
53g
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HMX Rain RBO Linear Switch

The HMX Rain Rail Bottom-Out is a five-pin linear switch with a scratchy feel from top to bottom. Its design pairs a rail bottom-out structure with a material combination selected to keep the keypress relaxed, controlled, and consistent through the full travel.

The top housing’s matte guide rails and updated stem-mold components are tuned to work together for a more uniform sandy texture. PA66 housing material with a small amount of fiberglass was selected after extensive testing for stability, while the POM-blend stem was chosen for its preferred textured surface and feel. In another way, you can say the Rain switch is the RBO version of the HMX Azalea linear switch.

Its factory lubrication is specially tuned for scratchy switches: the spring and stem receive a thin dry-film treatment, while the leaf and spring-contact area of the bottom housing are evenly lubricated to control metallic noise. Areas where lubrication is unnecessary are kept as dry as possible to preserve the intended feel.

The colorway draws from the misty, rain-washed palette of Jiangnan water towns and Huizhou-style architecture—an understated Chinese aesthetic of soft rain and light wind.

Specs:

1 quantity = 10 switches
Switch Type Five-Pin Linear, Rail Bottom-Out
Designer Youth Studio
Manufacturer HMX
Top Housing PA66
Stem POM blend
Bottom Housing PA66
Operating Force 42g / 48g
Bottom-out Force 53g / 57g
Pre-travel 2.0mm ± 0.2mm
Total Travel 4.0mm ± 0.2mm
Spring 20mm single-stage
Factory Lubed Yes! Specially tuned dry lubrication for a uniform sandy feel and controlled noise.
  • HMX Rain Rail Bottom-Out Linear Switch, front view
  • HMX Rain Rail Bottom-Out Linear Switch components
  • HMX Rain Rail Bottom-Out Linear Switches
  • HMX Rain Rail Bottom-Out Linear Switches, arranged
1 / 1
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Customer Reviews

Overall rating: 5.0 / 5 from 7 reviews.

Customer video review of HMX Rain Rail Bottom-Out Linear Switch Factory Lubed (10PCS)

Easily HMXs best RBO switch and their best scratchy switch in my opinion. They're very full and deep, with no unwanted noise like chatter or ticking. They're similar to MX Blacks but are different enough to have their own character. They are VERY scratchy in both sound and feel. This should go without saying but if you don't like scratch these switches are not for you. They have far more significant scratch than something like Lanikais but it feels more refined and less grainy than Sonjas, which are switches I do not like. If you like scratchy and/or RBO switches these are definitely worth trying out. They're my favorite HMX switches to date. Build in video is as follows: Bowl x Alexotos Manta, alu plate, o-ring mount, no foam, KKB celestial kinetics, HMX rain switches

Jasper C. 5/5

HMX Rain Rail Bottom-Out Linear Switch Factory Lubed (10PCS)

I love these switches even though I just put them in my Tofu60 3.0 the other day. I believe they'd sound even better in one of my heavier boards. They are scratchier in both sound and feel than any of my other scratchies (Torreros, cherries, nezukos, purple sprout) in a really good, consistent kind of way. The clack also sounds somewhat deeper than the aforementioned.

Joakim V. 5/5

HMX Rain Rail Bottom-Out Linear Switch Factory Lubed (10PCS)

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