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SKU: DBKL0650

Hayes Dominion A2 Rear Hydraulic Disc Brake and Lever - Compact 2-Piston, Post Mount, Kevlar Hose, QuickBite System, Cross Country & Trail Performance, Alloy Caliper, Enhanced Braking Control for Cross-Country & Trail Riding

Regular price $249.99
$249.99 Sale price $249.99 Regular price
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This is a pre order item. We will ship it when it comes in stock.

$10 Gift Card

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$25 Gift Card

at 500 points

$75 Gift Card

at 1,000 points

Description

Upgrade your trail and cross-country rides with the Hayes Dominion A2 Disc Brake and Lever - the ultimate hydraulic braking solution designed for serious cyclists. Built for precision, durability, and consistent performance, this rear post-mount disc brake combines innovative engineering with high-quality materials to enhance your riding experience.

Materials & Construction:

Constructed with a rugged, lightweight aluminum caliper and a Kevlar-reinforced hydraulic hose, the Hayes Dominion A2 offers exceptional durability and heat resistance. The black and bronze finish provides a sleek, aggressive look that complements mountain bikes and trail rigs alike.

Performance & Engineering:

Engineered for low-effort, high-fidelity braking, the Dominion A2 features a compact 2-piston caliper that delivers powerful stopping power with minimal lever input. Its proprietary QuickBite system ensures fast and consistent brake pad burnish for immediate, reliable response on every ride. The high-performance hydraulic system utilizes a two-stroke dual port bleed system, providing easy maintenance and optimal performance across wide temperature ranges, from hot summer climbs to chilly descents.

Components & Technology:

Equipped with the innovative Crosshair Caliper Alignment System, installation and precise caliper positioning are simplified - saving time and ensuring optimal brake pad contact. The short finger lever (SFL) design provides ergonomic comfort and exceptional modulation, giving you full control whether you're tackling technical descents or smooth climbs. Note: D-Series rotors, caliper adapters, and bleed kits are sold separately, allowing customization based on your bike setup.

Style & Use Case:

Designed specifically for cross country and trail riding, the Hayes Dominion A2 combines sleek aesthetics with high-performance features for riders who demand confidence and control on technical trails and long-distance XC courses. Its clean black and bronze color scheme complements various bike styles, making it a versatile upgrade for mountain bikers seeking reliable, top-tier braking performance.

Key Features:

- Rear hydraulic disc brake with advanced 2-piston caliper

- Compact, ergonomic short finger lever for enhanced control and comfort

- Proprietary QuickBite system for fast, consistent brake pad burnish

- Kevlar-reinforced hydraulic hose for durability and heat resistance

- Crosshair Caliper Alignment System for straightforward installation

- Ideal for cross country and trail riding applications

Upgrade your mountain bike braking system with the Hayes Dominion A2 hydraulic disc brake and experience superior stopping power, effortless modulation, and reliable performance on every ride. Perfect for riders seeking to optimize their trail control and ride with confidence.

  • Advanced Hydraulic Performance: The Hayes Dominion A2 features a dual-port bleed system and Kevlar reinforced hose, ensuring consistent braking performance and ease of maintenance across a wide range of temperatures and riding conditions.
  • Optimized for Cross Country & Trail Riding: Designed with a compact 2-piston caliper and short finger lever (SFL), this brake provides precise modulation and reliable stopping power on demanding off-road trails and XC courses.
  • Innovative QuickBite System: Experience fast and consistent pad engagement with Hayes' proprietary QuickBite technology, reducing brake fade and delivering reliable performance during intense rides and long descents.
  • Precision Installation & Alignment: The Crosshair Caliper Alignment System simplifies setup and ensures optimal pad-to-rotor alignment, enhancing braking efficiency and shortening installation time, making maintenance hassle-free.
  • Stylish & Durable Design: Featuring a sleek Black/Bronze finish, this rear hydraulic disc brake combines high-performance engineering with durable materials, making it a perfect upgrade for serious trail riders seeking style, control, and reliability.
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We pride ourselves on our ability to ship and deliver your gear with excessive speed! We ship from 22 locations throughout the United States and most orders will arrive in 3 days or less with Free Shipping on orders over $75!

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Most orders placed during the workweek before 1:00 PM Eastern time ship the same day, but during peak/holiday season or depending on inventory location handling time can take up to 48 hours. If you have questions regarding shipping estimates, don't hesitate to get in touch with us before placing the order. There is a direct signature requirement for all orders over $500.

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365 Cycles puts the customer above everything. Our number one goal is your satisfaction. When you press the shift lever you want the gears to shift, and when you buy bicycle parts, you want the bicycle parts to arrive on time in new condition. With over 60,000 products and 22 warehouse locations throughout the country, we have the parts you need and they are coming in hot!

Living an active lifestyle is just that, a lifestyle that never goes away and our goal is to always exceed your expectations so we can take this lifelong journey together. We strive to have the parts you need, at competitive prices with unmatched shipping speeds!

If there is ever an issue with an order we will work at warp speed to fix our mistake and make sure you never go a day without a bicycle! If you are not receiving the quality of service you need from one of our exceptionally qualified bicycle experts, tell them Ben Berman told you to tell them "Customer Loyalty" and then name your terms.

Our team is waiting to help you 7 days a week and they are more qualified to help than I am but if you ever feel like you're not getting the service you need I’m personally asking you to email me at ben@365cycles.com with "CUSTOMER LOYALTY" in the title and I will personally handle your order.

Over the years we have served millions of satisfied customers and continue to serve many of them today. With your feedback, we are confident we can take this lifelong journey together and build a friendship that goes beyond parts and accessories.

“If you want to go fast, go alone, if you want to go far, go together.” -Someone Smart

Ben Berman Founder & CEO of 365 Cycles


Company Core Values: 

These were established by the members of our team and we use them every week to call out team members who have shined in one of these areas. Feel free to let us know at info@365cycles.com if someone you worked with has gone above and beyond in one of these areas. 

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If it is to be, it’s up to me" You are personally responsible for controlling the outcome.

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If you want to go fast, go alone, if you want to go far, go together. Get your team involved and become stronger together.

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