Dominion A4 Brakes (Hydraulic)

Hayes Dominion A4

Making power is easy.  Making power with the right feel, that was Hayes' challenge.  Hayes did this by creating an all new system.

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

With a motorsports inspired Two-Stroke dual port bleed system, industry leading DOT5.1 fluid and Kevlar hose, the hydraulic system is engineered for ultimate performance 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.

Hayes Dominion A4 FeaturesHayes Dominion A4 FeaturesHayes Dominion A4 Features

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5 Item(s)

  1. Hayes  new brake for 2020 - the Dominion A4 JUnit SFL
    SFL is a Small Form Lever - designed for the smaller hands of junior riders.

    Junior version of the award winning Dominion A4
    Four piston caliper with cross-hair alignment
    Flippable lever with reach adjustment
    Dead stroke is factory set
    Pre-bled with short hose for rear use
    Uses DOT 5.1 fluid
    Fits 74 mm post mount brackets and adapters
    Works best with Hayes D series rotors

    Hayes Part Code: 95-36115-K051

    Available direct from Shockcraft or via your local bike shop

    Learn More
  2. Hayes new brake for 2020 - the Dominion A4 JUnit SFL
    SFL is a Small Form Lever - designed for the smaller hands of junior riders.

    Junior version of the award winning Dominion A4
    Four piston caliper with cross-hair alignment
    Flippable lever with reach adjustment
    Dead stroke is factory set
    Pre-bled with long hose for rear use
    Uses DOT 5.1 fluid
    Fits 74 mm post mount brackets and adapters
    Works best with Hayes D series rotors

    Hayes Part Code: 95-36115-K052

    Available direct from Shockcraft or via your local bike shop

    Learn More
  3. Allows fitment of Shimano Ispec II shifters to Hayes brakes

    Hayes Part Code: 98-36137-K001

    Learn More
  4. Allows fitment of SRAM Matchmaker shifters to Hayes brakes

    Hayes Part Code:  98-36137-K002 Learn More
  5. Hayes Dominion Lever Assembly
    Includes master cylinder and lever blade
    Lever is SFL type (Small Form Lever) for smaller hands
    Same part for left and right
    Lever blade can be swapped to larger size

    Hayes Part Number:  98-36118-K101 Learn More

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5 Item(s)