Name: Dominion A4 Brake
Brand: Hayes Disc Brakes
SKU: 95-36115-K004
Price: 249.99 USD
Availability: OutOfStock

Hayes Disc Brakes | Dominion A4 Brake - 100cm / Regular / Stealth Black / Grey

Hayes Disc Brakes | Dominion A4 Brake - 100cm / Regular / Bronze

$249.99

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Description

Hayes Dominion, our award-winning A4 brakes available in Stealth Black or Bronze – adding even more ways for you to stop!

Dominion's master cylinder is factory tuned for the shortest dead stroke possible and a crisp bite point. The Dominion A4 caliper utilizes four Ø17mm pistons in the most structurally rigid design possible. It features a cold-forged caliper and KingPin structural pad retention bolt that increases stiffness.

With a motorsports-inspired Two-Stroke dual port bleed system, industry-leading DOT 5.1 fluid and Kevlar hose, the hydraulic system is engineered for ultimate performance across all temperatures and easy maintenance.

Dominion A4 features the proprietary QuickBite² system for fast and consistent burnish, coupled with our D-Series rotor to manage the heat with less braking noise.

Also available in SRL (Short Reach Lever) - ergonomically designed for the smaller hand or short reach level positioning.

•Tool-Free Reach Adjustment
•Flip-Flop Lever Orientation
•King Pin Pad Retention
•Crosshair Caliper Alignment
•Two-Stroke Dual-port bleed system
•Two Sets of Pads Included. Semi Met installed Sintered in the box

•310g
•DOT 5.1 Fluid
•Tool-Free Reach Adjustment
•2-Stroke Dual Port Bleed System
•Sealed Cartridge Bearings Lever Pivot
•180cm Hose Length
•Caliper Piston Diameter 17mm

Dominion In The News

"The Dominion brake is a winner in every sense.. If you are in search of a good brake, start with this one"

"These are the easiest brakes I've ridden in terms of maintaining grip down steep, greasy, janky North Shore trails without the benefit of suspension. It's a bonus that they still work like new"

"I was pleasantly surprised by the Dominion A4 brake and I think most riders will be as well"

"I find myself recommending these to everyone that sees them on the trail."

"Overall, the Hayes Dominion’s performance was very impressive indeed, descent after descent we encountered nothing but consistent and precise braking."

"if you’re chasing the hand and arm fatigue gremlins but haven’t yet experimented with more powerful, easier to use brakes, consider this an endorsement from a weak-handed man who’s now less sore at the bottom of every descent."

Rotors and Brackets not included

Get everything you need!

D-Series Rotor

$59.99

Dominion Pro Bleed Kit

from $8.50

Post Mount Disc Brake Caliper Brackets

$19.99

IS Mount Brackets

$19.99

Feel'r Gauge Brake Alignment Tool Purple

$23.99

Low Input - High Fidelity (LoFi)

Low effort system with predictable, progressive ramp up and a crisp bite point.

Loaded With Tech

Reduced Friction - A featherlight lever feel is acheived through a combination of an added glide ring on the piston and sealed ball bearings at the lever blade pivot
SRL - Our Stable Rate Link delivers a consistent lever ratio regardless of reach
Precise Engagement - Each Dominion is factory set to have the lowest dead stroke possible and a crisp bite point.
Built to last - Metal pistons are used to ensure that no matter the terrain or temperature your brake will continue to perform as it did on the first ride
Adjustable Reach - Adjust your lever reach with ease while on the trail thanks to an intuive adjustment knob design

Modal Resonance Cancellation (MRC)

FEA-optimized modal shapes of D-Series rotors are intentionally designed to oppose those of Semi-Met T106 and Sintered T100 pads, canceling out noise and vibration.

Crosshair Caliper Alignment screws allow for quick and accurate setup.

King Pin pad retention bolt adds strength.

2-Stroke dual port bleed system for maximum bleed integrity.

Easy. Effective. Excellent.

These were a great upgrade from the Tektro kit that came on my bike. Getting them adjusted to my liking was incredibly easy, and they've provided all the stopping power I need with no fading whatsoever. As a bonus, my bike mechanic said he also runs these and they're his favorite for how well they work and how long they last.

powerful brakes

I've always been a Shimano until I tried the Dominion A4 and on my first ride with the brakes, I fell in love! very powerful and the modulation is really nice. easy to install and set it up to your preference and style of riding. I will be replacing all the brakes on my other bikes with the A4 dominion.

The Best Brakes

These are the best brakes i have owned. I have been riding, racing, servicing, bleeeding and swapping Hayes Dominion A4 Brakes for a year now. No problems at all. Last summer during race season all i had to do is change brake pads, these brakes just work. Servicing is easy and there is plenty of adjustments to make the brakes fit for anyone

These are the best bike brakes. Read my review, I tried many!

I tried the following brakes and I weight 195 lbs geared up:

- SRAM Level T: pretty much useless

- Magura MT5 with MT7 pads: A PITA to bleed. Okay power, cheap lever.

- Shigura MT5/xt: powerful, but wandering bite point coming from the Shimano servowave (the lever acts like a cam, and if the piston don’t return fast enough on the lever to make contact and push oil, then you could have some emotions trying to brake late before a berm)

-Shimano two piston slx: okay for the rear wheel of a 27,5 trail bike

-Shimano SLX 4 pistons: wandering bite point due to friction and slow return of the servowave and cracked ceramic piston with no spare parts. Lame in winter. Next.

-Shimano XT 4 pistons: same as SLX. Decent power when they work. Okay for beginners but if you want to go fast and maximize your speed in every berms and before drops, look elsewhere. Oh and no spare parts. Also: all the 2021 and newer Shimano lever blades have a little dent near the pivot that creates a week point. Compare 2019 to 2021 and you will see. They are the same weight (identical) but the newer version has a week spot, so if you ever clip a tree or just fall, the lever blade will break (well, 2 of mine did). Oh. And no spare parts ;).

- cheap trickstuff imitation levers from Zoom mixed with magura MT5 caliper (for the science and since I have so many brakes lying around…). Damn… not bad. Perfect for a fatbike in winter. Great modulation, a good amount of power and a great feeling lever.

-TRP DHR evo: now we are getting serious. Removed the organic pad (glazing just by looking at them in the sun). Semi-metallic pads —> nice! Lot of power, good modulation, strange finger position due to the weird lever blade. Upgraded to an aftermartket lever. Still a bit strange, but they are great.

-Hayes Dominion A4: Installation and bleeding: easy peasy. CRAZY amount of power. Perfect caliper alignment with the cross hair grub screw. The modulation is perfect with absolutely no dead stroke. The lever feels awesome, with a lot of possible adjustment. If you try these or the TRP, you will never use shimano or sram ever again.

The Hayes Dominion A4 are the best of all. They are DOT fluid, but easy to bleed with no mess, so that’s fine with me!

Brake rotor thickness

Work with 3mm thick rotors?

1 2 3

Dominion A4 Brake

Description

Dominion In The News

Rotors and Brackets not included

Low Input - High Fidelity (LoFi)

Loaded With Tech

Modal Resonance Cancellation (MRC)

Customer Reviews

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