Gorilla Brakes Enduro Pro Ultimate replacement brake pads for Hayes Dominion A4 / T4 calipers, with a compound developed for demanding braking.
At a glance
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
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 |
Enduro Pro Ultimate is an e-bike-rated compound. Use these pads only with the compatible calipers listed here and match the complete brake setup to your bike and total load.
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
Our published compound testing shows strong braking output as rotor temperatures rise. Enduro Pro Ultimate also achieved the best wear resistance within the bench test group.
These findings describe the samples and setups tested. Actual performance and wear depend on your braking system and riding conditions.
Heat management
Swipe or scroll sideways to read the whole plot.
All curves shown
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.
All eight curves use the Shimano XT RT86 rotor. Choose a compound to highlight its tested result.
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
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.
Two Enduro Pro Ultimate results are shown: the main comparison sample and the aluminium-backed sample. Both used the Shimano XT RT86 rotor. Compare each curve as its labelled backing-plate 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.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
Check your fitment, prepare your brakes and find support.
Your questions
Fitment, materials and performance explained.
A4, T4; A4 SRL. Check the caliper model: these are the four-piston A4/T4 pads. They do not fit the two-piston Dominion A2/T2.
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.
The ratings describe the Enduro Pro Ultimate compound. They are not separate test scores for this caliper fitment or backing plate. The temperature graph shows the tested steel and aluminium-backed samples; it does not measure cooling time.
Enduro Pro Ultimate is an e-bike-rated compound. Use these pads only with the compatible calipers listed here and match the complete brake setup to your bike and total load.
The Enduro Pro Ultimate compound has a quietness rating of 8 out of 10. That is a compound rating, not a guarantee of silent braking. Noise can vary with conditions, rotor condition, contamination 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. Rotor diameter and thickness must meet your brake manufacturer’s specifications. Check the rotor’s condition and minimum permitted thickness before fitting new pads.
Product video
An overview of Enduro Pro Ultimate, Semi-Metallic and Resin. This listing supplies Enduro Pro Ultimate pads. See the product information for fitment and pack contents.
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