Hayes Dominion A-Series Master Cylinder
Best high performance upgrade for mountain bikers seeking effortless lever control.
A direct replacement component designed to restore factory-level performance to high-end hydraulic disc brakes. This assembly simplifies maintenance by allowing riders to swap out worn controls without replacing the entire system, ensuring consistent, reliable stopping power on the trail.
$149.99
at
Hitchhiker Bike Shop
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Hayes Dominion Replacement Brake Lever
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Hayes Dominion T-Series Brake Lever
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Hayes Dominion A4 Disc Brake Lever
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Hayes Dominion T2
$349.99
Hayes Dominion A2 Disc Brake
$249.99
Dominion T-Series Master Cylinder
$209.99
Hayes Dominion Master Cylinder
$149.99
Hayes Dominion T-Series Master Cylinder
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Hayes Dominion SFL Brake Lever
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Hayes Dominion A-Series Master Cylinder + Lever
$149.99
Hayes Dominion Lever Blade
$60.99
Who it's for
- Riders seeking maximum control with minimal finger fatigue
- Technical mountain bikers who prioritize nuanced braking control
- Cyclists who want to personalize their cockpit ergonomics on trail
Who should skip it
- Weight-conscious racers looking for the lightest possible setup
- Home mechanics who prefer quick and simple maintenance routines
- Minimalists who prefer a sleek and low-profile handlebar aesthetic
Performance breakdown
Lever Modulation
Provides the precise, predictable feedback riders expect from Dominion systems.
Installation Versatility
Ambidextrous design simplifies setup for either front or rear braking.
Build Integrity
Robust construction maintains factory-level performance under heavy trail stress.
System Compatibility
Seamlessly integrates with existing A4 and A2 hydraulic disc calipers.
Maintenance Efficiency
Streamlines servicing by replacing only the worn master cylinder assembly.
Ergonomic Feel
Retains the signature lever shape for consistent, comfortable finger engagement.
Key Specs
Compatibility
Dominion A4 and A2 Disc Brakes
Orientation
Ambidextrous
Color
Black/Bronze
Brake System Type
Hydraulic Disc
Intended Use
Mountain Biking
Model Number
98-36118-K101
Know before you buy
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