Hayes Dominion A4 disc brake black/bronze

Show all items from Hayes
    You can find more information about what there is exactly included in delivery on the left-side menu.
  • Making power is easy. Making power with the right feel, that was our challenge. We 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 possible. It features a cold-forged caliper and KingPin structural pad retention bolt that increases stiffness.
    With a motorsports-inspired Two-Stroke dual port bleed system, industry-leading DOT 5.1 fluid and Kevlar hose, the hydraulic system is engineered for ultimate performance across all temperatures 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.

    • Cartridge-bearings used in the brake lever
    • Aluminum piston operates smoothly across operating temperatures
    • Piston glide ring technology pioneered in suspension forks
    • Caliper: Two Stroke – Dual caliper bleed ports for maximum bleed integrity
    • KingPin – Structural caliper pad pin
    • Crosshair Caliper Alignment System: Dramatically simplifies caliper installment and alignment
    • Patented Crosshair caliper alignment screws
    • Allows mechanics and end users to quickly and accurately set brake caliper with no rubbing of the rotor on the pads
    • Eliminates guesswork and trial and error
    • Makes set up process quick and easy for ‘out of the box’ build
    • QuickBite² – Offers riders the shortest path to high performance
    • Fast, consistent burnish
    • Predictable performance
    • Quiet


    • Lenght brake hose: Front / 1000 mm, Rear / 1800mm


  • Rate this product

    • TimW 14/12/2019
      Amazing brakes, especially modulation
      I've heard great things about these brakes.
      I'm a bigger guy and a friend of mine who is also a large dude said the modulation and stopping power of these brakes are awesome, so I'm going to buy a pair. I'll be putting on a 203mm rotor on the front and 180mm on the rear.

    1 review for Hayes Dominion A4 disc brake black/bronze with an rating of 5 points.
  • Tipp
    Hint for breaking-in:
    New disc brake pads require a certain break-in period in order to provide the full brake power.
    The following procedure has proved oneself: drag braking on a downhill until the brake power noticeably increases. Then let the brake rotor cool out. Afterwards do 20 full stop brakings from a medium speed. Attention: the rotors get very hot, do not touch them!
  • Customers who viewed this also viewed:
2020 cycling season start super-SALE
Stock blowout at bargain prices
You are here:
Home  >  Components  >  Disc brakes
Login  /  Register