Good quality and only place I could find pack of 4 rather than them.coming in 2's at double the price 😆
Great so far! Stop exceptional and low noise.
Gorilla Brakes Enduro Pro Semi-Metallic replacement brake pads for Hayes Dominion A4 / T4 calipers, with a compound developed for demanding braking.
At a glance
Specifications
- Compound
- Enduro Pro Semi-Metallic
- Backing plate
- Steel
- Pad shape
- Hayes Dominion A4 / T4
- Riding
- Trail, enduro, downhill and e-MTB
- Pack contents
- 2 brake pads and 1 pad spring
- Coverage
- 1 compatible brake caliper
Each pack contains 2 brake pads and 1 pad spring, for one compatible caliper. Order two packs to replace both front and rear pads after checking both calipers use this pad shape.
Check before ordering
Compatibility
Check the caliper model: these are the four-piston A4/T4 pads. They do not fit the two-piston Dominion A2/T2.
| Brake family | Compatible calipers |
|---|---|
| Dominion 4-piston | A4, T4 |
| Dominion with Short Reach Lever | A4 SRL |
- Caliper / pad references
- A4, T4
E-bike and loaded riding
Enduro Pro Semi-Metallic is an e-bike-rated compound recommended for electric bikes, heavy cargo bikes and loaded touring. Use this pad shape only with the compatible calipers listed here, and match the complete brake setup to your bike and total load.
Rotor compatibility
This compound is suitable for all bicycle disc brake rotor types, including rotors marked “resin pads only”.
Rotor diameter and thickness must meet your brake manufacturer’s specifications. Check the rotor’s condition and minimum permitted thickness before fitting new pads.
Compound performance
Enduro Pro Semi-Metallic
A versatile compound for trail, enduro and loaded riding. Our published testing highlights its dry braking performance and a cooler caliper than Sintered at comparable rotor temperatures.
These findings describe the tested samples and setups, not separate tests of every pad shape or caliper. Actual braking performance, temperature and wear depend on your braking system and riding conditions.
Heat management
Caliper temperature vs rotor temperature
Swipe or scroll sideways to read the whole plot.
All curves shown
About this test
The horizontal axis shows rotor temperature; the vertical axis shows caliper temperature. At the same rotor temperature, a lower curve means a cooler caliper in this test setup. Consider this alongside braking power, pad life and correct fitment when choosing pads for long descents or heavier loads.
Indicative test comparison. Results relate to the tested samples and setup.
Compare braking power across compounds
All eight curves use the Shimano XT RT86 rotor. Choose a compound to highlight its tested result.
Why some curves stop earlier
Each test run stopped when the measured caliper temperature reached 120°C, the stopping threshold used to protect the piston seals in this test setup. The horizontal axis shows rotor temperature. Sintered’s shorter curve means the caliper reached the limit at a lower rotor temperature.
Swipe or scroll sideways to read the whole plot.
All curves shown
About this test
This chart compares braking power for bedded-in pads, all tested with the Shimano XT RT86 rotor. The horizontal axis shows rotor temperature (°C); the vertical axis shows braking power (W). Each curve represents the compound and backing-plate configuration named in the selector. Compare curves within their plotted ranges; no result is shown beyond the end of a curve.
Follow Enduro Pro Semi-Metallic for this compound. These results relate to the tested configuration.
Test context: All pads shown can be good choices for their intended use when correctly matched to the bike and rotor, installed and bedded in. A lower or shorter curve does not by itself make a pad a poor everyday choice. Real riding temperatures depend on the route, total load, braking technique and setup; this test does not establish a temperature limit for the average rider. Rotor choice can substantially affect braking power, but these results apply to the tested combinations. This comparison does not guarantee the same improvement on another bike or identify one best pad for every rider.Fitting and bedding in
Follow our installation guide, then complete the recommended bedding-in procedure to prepare the new friction material and establish an even transfer layer on the rotor.
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Help & fitting
Get your brakes ready
Check your fitment, prepare your brakes and find support.
Your questions
About these brake pads
Fitment, materials and performance explained.
What do the performance ratings describe?
The ratings describe the Enduro Pro Semi-Metallic friction compound. Individual pad shapes, backing plates and calipers have not been separately scored. Higher scores indicate stronger performance in that category; a higher quietness score means quieter braking.
How do I check that these pads fit my brakes?
Match the exact caliper model and existing pad shape to the compatibility table on this page. Do not rely on the brake lever name or series alone. Check the front and rear calipers separately, because some systems use different pad shapes at each end.
Which rotors can I use with this compound?
This compound is suitable for all bicycle disc brake rotor types, including rotors marked “resin pads only”. Rotor diameter and thickness must meet your brake manufacturer’s specifications. Check the rotor’s condition and minimum permitted thickness before fitting new pads.
Do new brake pads need bedding in?
Yes. Follow the installation guide and complete the recommended bedding-in procedure before demanding riding. Bedding in prepares the new friction material and establishes an even transfer layer on the rotor.
Can I use these pads on an e-bike?
Yes. Enduro Pro Semi-Metallic is an e-bike-rated compound recommended for electric bikes, heavy cargo bikes and loaded touring. Use this pad shape only with the compatible calipers listed on this page, and match the complete brake setup to your bike and total load.
What is included in one pack?
Each pack contains 2 brake pads and 1 pad spring for one compatible caliper. Check the front and rear calipers separately before ordering two packs.
Product video
Enduro Pro brake pad compounds
An overview of Enduro Pro Ultimate, Semi-Metallic and Resin. This listing supplies Enduro Pro Semi-Metallic pads. See the product information for fitment and pack contents.