NO FOAM BACK-TO-BACK · Neo65 Core Plus · Aluminum Plate · GMK ABS · Elgato Wave:3
HMX Grey vs HMX X 80 RETROS KD400
Hear HMX Grey vs HMX X 80 RETROS KD400 back-to-back with standardized zero-foam audio on Neo65. Side-by-side travel distance, housing materials, and sound profile breakdown.
Standardized Zero-Foam Sound Tests
Deck A: HMX Grey Linear Switch Factory Lubed @0:02
Crispy Carbon-Fiber Clack
Deck B: HMX X 80 RETROS KD400 Linear Switch Factory Lubed @1:39
New Clack King / Clean Tone
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Side-by-Side Technical Spec Comparison
| Specification | HMX Grey Linear Switch Factory Lubed | HMX X 80 RETROS KD400 Linear Switch Factory Lubed |
|---|---|---|
| Bottom-out Force & Actuation | 45g bottom-out · 37g actuation | 46g bottom-out · 40g actuation |
| Total Travel Distance | 3.7mm | 3.5mm |
| Stem Material | POM | Strengthened POM (M1) |
| Top & Bottom Housing Materials | Top: PA12 (smoky semi-transparent with glitter and light guide) / Bottom: PA66 + Carbon-Fiber Mast | Top: Modified PA12 / Bottom: N3 (PA66 + PBT) |
| Factory Lube Status & Mount | Factory Lubed · 5-Pin | Factory Lubed · 5-Pin |
| Price per 10-Pack (with code shylocutus.com) | $3.25 USD / 10pcs | $11.36 USD / 10pcs |
Matchup Notes
Acoustic & Tactile Feel
HMX Grey channels bottom-out energy through its decoupled center mast for a loud, piercing high-frequency acoustic presence, whereas HMX X 80 RETROS KD400 pairs smooth linear downstroke with balanced mechanical resistance with a classic, medium-pitched clack with grounded acoustic decay.
The Verdict
Pick HMX Grey if you want maximum high-pitched clack volume and sharp center-pole impact. Pick HMX X 80 RETROS KD400 if you want balanced, consistent linear travel and classic clack tone. Can't decide or want two distinct acoustic profiles for your rotation? Grab the bundle above to test both back-to-back on your own board — code 'shylocutus.com' auto-applies 7% off at checkout.