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The BSUN Kuromi and HMX Cthulhu switches are both standard MX mechanical switches of the linear breed. They both feature standard stem shape, 2 mm pre-travel, however, they come with different top housing (PC (modified, glittery) vs PC), bottom housing (PA66 (+25% fiberglass) vs P7), stem material (POM (modified) vs M1 POM), spring (21 mm single-stage vs 22 mm), actuation (37 g vs 45 g), bottom-out force (43 g vs 50 g), total travel (3.60 mm vs 3.50 mm). That said, they are mostly different. Let's check out this side-by-side specs rundawn with details, availability -- and even current prices -- to figure out which one fits you the best!
The BSUN Kuromi is a linear standard MX mechanical switch with PC (modified, glittery) top housing, PA66 (+25% fiberglass) bottom housing, and POM (modified) stem (standard shape). It features a 21 mm single-stage spring. The 37g actuation occurs at 2mm. The 43g bottom-out occurs at 3.60mm. Two weight options: 37-43g / 45-53g. Factory lubing? Yes! Manufactured by BSUN. | The HMX Cthulhu is a linear standard MX mechanical switch with PC top housing, P7 bottom housing, and M1 POM stem (standard shape). It features a 22 mm spring. The 45g actuation occurs at 2mm. The 50g bottom-out occurs at 3.50mm. Factory lubing? Yes! Designed by SULAB. Manufactured by HMX. |
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| Name | BSUN Kuromi | HMX Cthulhu |
|---|---|---|
| Type | linear | linear |
| Footprint | 5-pin | 5-pin |
| Top housing | PC (modified, glittery) | PC |
| Bottom housing | PA66 (+25% fiberglass) | P7 |
| Stem material | POM (modified) | M1 POM |
| Stem shape | standard | standard |
| Spring | 21 mm single-stage | 22 mm |
| Actuation | 37 g | 45 g |
| Bottom-out | 43 g | 50 g |
| Pre-travel | 2 mm | 2 mm |
| Total travel | 3.60 mm | 3.50 mm |
| Lube | Factory lubing? Yes! | Factory lubing? Yes! |
| Designer | - | SULAB |
| Manufacturer | BSUN | HMX |
By tracking prices and in-stock status of 30+ well-known keyboard stores worldwide, we can state that the BSUN Kuromi is available at a single shop at the moment, while the HMX Cthulhu can be found in multiple stores.
Clicking the links below take you to some notable keyboard shops offering BSUN Kuromi and HMX Cthulhu switches. When accepted, the prices indicated already include the discount - use the KBDNEWS coupon code at checkout to claim your saving!
Prices, discounts, and stock status are checked regularly; however, changes since the last update cannot be ruled out. Everything here is for informational purposes only. Check the product pages for the latest prices!
Comments on BSUN Kuromi switches | Comments on HMX Cthulhu switches |
Unleash smooth, deep-sounding keystrokes with the BSUN Kuromi linear switch—a switch that combines aesthetic charm with unparalleled performance. Designed to delight both the eyes and fingertips, these switches offer an uncommonly smooth, consistent keystroke paired with a striking colorway inspired by Kuromi, the beloved Sanrio character. The glittery pink top housing, paired with a sleek black bottom housing, creates a bold, visually appealing contrast that brings flair to any keyboard build. This standout design doesn't just look good—it delivers, with an exceptionally smooth action and a satisfyingly deep sound profile, making every press a tactile and auditory delight – Thocc Exchange. | HMX Cthulhu is here! Designed in collaboration with SULAB for enthusiasts who love loud, sharp, and clacky typing, it delivers an ultra-clacky, bright sound that stands out on any build. Featuring a smooth M1 modified POM stem and a high-fiberglass P7 bottom housing — the highest fibreglass content HMX has used to date – SerpentKeys. |
