If your brake caliper uses Hayes HFX 9, HFX Mag, or MX-1 pads, these will fit.
Gorilla Brakes Semi-Metallic Disc Brake Pads are designed to restore smooth,
predictable braking to classic Hayes HFX and MX-1 brake systems. Using a soft
semi-metallic compound, these pads deliver quiet operation, fast bedding-in, and rotor-friendly
performance for trail riding, recreational MTB, and everyday use.
🔧 Compatibility
Direct replacement pads for the following Hayes brake systems:
Pad Type
Brake Series
Caliper Model
Riding Discipline
Hayes HFX / MX-1 pad format
Hayes
HFX 9
Trail, Recreational MTB
Hayes HFX / MX-1 pad format
Hayes
HFX Mag
Trail, Recreational MTB
Hayes HFX / MX-1 pad format
Hayes
MX-1
Trail, Recreational MTB
Not compatible with Hayes Stroker, Dominion, Sole, or newer MX series (MX-2, MX-3, MX-5).
🔥 Compound: Semi-Metallic
This semi-metallic compound is tuned for low noise, smooth modulation, and dependable braking.
It beds in quickly, produces less rotor wear than full metallic pads, and performs consistently
in dry and mixed conditions — ideal for older hydraulic systems.
Feature
Benefit
Soft semi-metallic blend
Quiet braking with smooth lever feel
Quick bedding-in
Consistent performance after short setup
Rotor-friendly behaviour
Reduced rotor wear on older systems
Stable modulation
Predictable control on trail and mixed terrain
REACH-compliant compound
Safe and compliant for UK & EU use
📦 What’s Included
1 × Pair of semi-metallic disc brake pads (fits one caliper)
1 × Pad spring
Minimal, recyclable packaging
🌍 Ideal For
Trail and recreational MTB riding
Restoring or upgrading older Hayes brake systems
Riders prioritising quiet braking and smooth modulation
Mixed terrain and everyday use
Installation tip: bed in new pads with 10–15 firm stops at low speed. Performance improves after initial heat cycles.
Gorilla Brakes is trusted by riders worldwide, with over 13,000 verified positive feedback ratings.
We also work closely with race teams and sponsored riders to validate performance in real-world conditions.
Great stopping power and quiet in the dry. Not had chance to use them in wet conditions
Hi Steven, thank you for your fantastic review! We're glad you're happy with the stopping power and quiet performance. Hopefully, you'll enjoy them just as much in wet conditions when you get the chance. Cheers for choosing Gorilla Brakes!
Not my first pair of semi metallic pads from Gorilla Brakes. Ideal pads for my style of riding, good compromise between sintered and organic pads plenty of bite without wet weather squealing you can get with sintered pads.Good value and prompt delivery.
Hi there, thank you for your fantastic review! We're glad to hear our semi-metallic pads suit your riding style and that you appreciate the value and prompt delivery. Cheers for choosing Gorilla Brakes!
