Hayes Dominion A2 Disc Brake
Best high performance upgrade for cross country and trail riders.
Designed for cross-country and trail riders, this system prioritizes quick, crisp actuation and easy maintenance. It simplifies the setup process with intuitive alignment tools and a dual-port bleed system, ensuring consistent, reliable stopping power without the usual headache of complex adjustments.
$249.99
More Dominion options
Who it's for
- Endurance riders seeking effortless control during technical downhill sections
- Technical mountain bikers prioritizing nuanced braking over binary stopping power
- Home mechanics wanting a rub-free setup without the usual frustration
Who should skip it
- Weight-conscious racers looking to shave every possible gram from their build
- Minimalist riders with crowded handlebars or limited mounting space
- Remote bike packers who need widely available spare parts for repairs
Performance breakdown
Stopping Power
Two-piston design delivers precise, reliable modulation for cross-country and trail riding.
Setup Simplicity
Crosshair alignment system makes centering the caliper a quick, frustration-free task.
Maintenance Ease
Dual-port bleed system ensures fluid changes are clean and efficient.
Ergonomic Adjustability
Tool-free reach adjustments allow for a perfect fit on the fly.
Break-in Speed
Proprietary pad burnishing gets you trail-ready almost immediately out of the box.
Weight Efficiency
Lightweight construction balances durability without adding unnecessary mass to your bike.
Key Specs
Brake Type
Hydraulic
Brake Fluid
DOT
Brake Mount
Post Mount
Brake Pads
Semi-Metallic, Sintered
Hose Length
1000mm (Left), 1800mm (Right)
Pistons
2
Lever Clamp
Split Clamp (22.2mm)
Weight
303g
Know before you buy
Still have a question?
Ask Metto anything about the Hayes Dominion A2 Disc Brake before you decide.