HMX
Siliworks X Hmx Sonja Hc







The HMX Sonja HC, or Sonja Hardcore, uses a customized stem and housing for a nostalgic rail bottom-out and a scratchy feel, making it a more OG version of the Sonja. It suits anyone who likes the Sonja but wants something scratchier with a heavier spring. Factory lubing follows the Snow Crash method: only the leaves and springs are lubed, leaves with a thin coat of a 205g0 and 105g0 mix and springs with dry-film, leaving stem and housings dry. Top housing is modified PA66 with added texture.
Last Updated: September 12, 2026
Specifications
Physical Specifications
- Actuation Force
- 52±2g
- Bottom Out Force
- 60g
- Pre-travel
- 2.0mm
- Total Travel
- 3.9±0.2mm
Build & Materials
- Stem Material
- POM
- Factory Lubed
- Yes
- Spring
- 18mm KOS single-stage extended
- Designer
- Silliworks
Profile Information
- Profile
- Standard Profile
- Type
- Linear
- Silent
- No
- Pin Count
- 5
