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Bsun K1

BSUN

Standard ProfileLinear5

Switch Overview

BSUN K1 is a budget linear switch designed by QN Studio and made by BSUN with their newest bottom housing and stem molds. Despite clacky-looking specs, the mold design makes it sound deeper, and even with fiberglass in the bottom housing it sounds thocky rather than clacky. QN used minimal factory lube on the stem sliders and housing rails to avoid pooling while keeping smoothness。

Last Updated: September 10, 2026

Physical Specifications

Physical Specifications
Actuation Force45g
Bottom Out Force53g
Pre-travel2.0mm
Total Travel3.6mm
Stem MaterialModified POM
Factory LubedYes
Spring20mm single-stage spring
DesignerQN Studio
MoldSame mold as Udon and Jade Rosales
Profile Information
ProfileStandard Profile
TypeLinear
SilentNo
Pin Count5
Force Travel Diagram
YouTube Videos

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