Hayes Dominion A4 Disc Brake
Best precise control for demanding trail riders.
This hydraulic disc brake lever delivers precise, consistent stopping power with a highly adaptable design. Its ambidextrous configuration and adjustable reach make it a versatile upgrade for riders seeking reliable performance and a customized fit on the trail.
$249.99
at
The Devil's Gear
More Dominion options
Who it's for
- Aggressive trail riders and downhill enthusiasts seeking ultimate control
- Riders prioritizing consistent brake performance and tactile feedback
- Home mechanics and riders valuing simple, effective brake maintenance
Who should skip it
- Weight-conscious cross-country racers and gram-counting trail riders
- Budget-conscious riders and those seeking value-oriented components
- Riders in remote areas or those preferring widespread brand support
Performance breakdown
Stopping Power
Four-piston architecture delivers immense, reliable force for aggressive downhill riding.
Lever Modulation
Precisely tuned pull curve offers nuanced control during technical descents.
Bite Point Consistency
Minimal dead stroke ensures a sharp, predictable engagement every time.
Thermal Management
DOT fluid system maintains consistent performance through long, heat-intensive runs.
Installation Versatility
Standard post-mount design makes setup straightforward for most modern frames.
Build Quality
Kevlar weave hoses and robust construction feel ready for professional abuse.
Key Specs
Brake Type
Hydraulic Disc
Intended Use
Downhill, Enduro
Caliper Design
4-Piston
Brake Pad Compound
Semi-Metallic, Sintered
Hose
Hayes K2 Kevlar Weave
Mount Type
Post Mount
Brake Fluid
DOT 4
Rotor Included
No
Weight
303 grams
Hose Length
900 mm
Know before you buy
Still have a question?
Ask Metto anything about the Hayes Dominion A4 Disc Brake before you decide.