Gorilla Brakes · Replacement disc brake pads

Hayes Disc Brake Pads – Gorilla Brakes Factory Racing Stealth

Factory Racing Stealth pads for the Hayes Dominion A4 / T4 family.

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Hayes Disc Brake Pads – Gorilla Brakes Factory Racing Stealth

This collection currently contains the Dominion A4 / T4 pad shape. It does not include the separate Dominion A2 / T2 shape or the legacy Hayes shapes.

Match A4 or T4 on the caliper and compare the product pad outline before ordering.

Choose your performance range

Find your brake pads

Enduro Pro

Our highest-performance range.

Factory Racing

Performance-focused options.

Standard Compounds

Everyday riding options.

Choosing Factory Racing Stealth

Factory Racing Stealth Purple pairs a steel backing plate with a quieter braking character for trail, road and gravel.

All Enduro Pro and Factory Racing compounds are e-bike rated. For heavy cargo, loaded touring and demanding descents, we recommend Enduro Pro Ultimate Orange or Enduro Pro Semi Metallic Blue in the correct fitment.

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Advice when you need it

Choose. Fit. Bed in.

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Before you order

Hayes Disc Brake Pads – Gorilla Brakes Factory Racing Stealth FAQs

A little help with fitment, compounds and getting ready to ride.

Which calipers are these products intended for?

These Factory Racing Stealth products are listed for the Hayes Dominion A4 / T4 family. Match that exact four-piston caliper and pad shape; the Dominion name alone does not confirm the A2 / T2 fitment.

How does Factory Racing Titanium differ from Stealth Purple?

They share the same tested compound profile and braking feel. Stealth Purple uses a steel backing plate; Titanium uses a lighter titanium backing plate. Choose the product in the correct pad shape, then decide whether the weight saving matters to you.

Which compounds are e-bike rated, and which do you recommend for heavy loads?

All Enduro Pro and Factory Racing compounds are e-bike rated. For heavy cargo, loaded touring and demanding descents, we recommend Enduro Pro Ultimate Orange or Enduro Pro Semi Metallic Blue in the correct fitment.

How should I prepare the rotor and bed in new pads?

Check the rotor’s condition, wear limit and permitted pad material. Follow the installation instructions for your caliper and our bedding-in guide, including rotor preparation when changing compounds.