HMX Su Color Blue R2
HMX Su Color Blue R2: a light 45g linear with a T5 stem, PA12 housing and clean factory lube. Specs, feel, tuning and verdict.
How it feels
How it sounds
Full review
Quick Summary
The HMX Su Color Blue R2 is a light 45g linear that leans on HMX’s recent run of clean, factory-tuned switches. It pairs a T5 stem with a PA12 housing and a slightly shortened travel for a smooth, easy keystroke that feels effortless under fast typing. If you want a featherweight linear that is good to go straight out of the bag, this is an easy recommendation.
Specs and Feel
This is a true linear with no bump anywhere in the stroke. At roughly 45g actuation and a 50g bottom-out, the force curve stays light and consistent from top to bottom, so it rewards a relaxed, floaty typing style. Travel is trimmed below MX standard at about 1.8mm pre-travel and 3.6mm total, which makes actuation feel a touch quicker than a full-length switch.
Smoothness is the headline. The T5 stem and PA12 housing glide cleanly, with no scratch worth mentioning, and stem wobble is well controlled in both directions. Sound is on the deeper, poppier side of the poly-housing spectrum, slightly muted rather than clacky, which suits a quieter desk.
Tuning
There is little to do here. The factory lube is applied evenly and the switch sounds and feels resolved as shipped, so running it stock is the sensible default. If you chase the last few percent, a light film or a careful hand-relube can deepen the sound marginally, but neither is necessary.
Verdict
Pick it if you want a light, short-travel linear that needs no work to feel premium. The 45g weighting and smooth poly character make it a comfortable daily driver and a forgiving choice for anyone new to building. Heavy typists who prefer a firmer bottom-out or a longer throw should look to a weightier linear instead, but for a light, clean, no-fuss switch the Su Color Blue R2 is a strong buy.
Frequently asked
How heavy is the HMX Su Color Blue R2?
It is a light linear, actuating around 45g with a 50g bottom-out, so the whole stroke stays gentle. Travel is shortened too, at roughly 1.8mm pre-travel and 3.6mm total.
Does the Su Color Blue R2 need lube out of the box?
No. It ships factory lubed and the application is clean and even, so most builders can run it stock. Hand-lubing is purely optional fine-tuning.
What is the stem and housing made of?
A T5 stem runs in a PA12 top and bottom housing, paired with a 22mm spring. That combination gives the switch its smooth, slightly muted poly sound.
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