Skip to content
  • 💸 Big savings + free shipping 💸
  • 💸 Big savings + free shipping 💸
Lifeline ShopLifeline Shop
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

  • Components
    • Derailleurs
    • Headsets
    • Handlebars
    • Pedals
    • Saddles
    • Seatposts
    • Brakes
    • Stems
    • Brake Pads
    • Cassettes
    • Cranksets
    • Gear Shifters
    • Bottom Brackets
    • Chains
    • Grips
  • Wheels & Tyres
    • Wheels
    • Tyres
    • Hubs
    • Tubes
    • Rims
    • Tubeless Kits
    • Quick Releases
    • Rim Tape
    • Spokes
    • Valve Caps
    • Nipples
  • Frames & Forks
    • Frame Spares
    • Forks
    • MTB Frames
    • Frame Protection
    • Road Frames
    • BMX Frames
    • Cyclo-X Frames
  • Accessories
    • Bags
    • Lights
    • Sunglasses
    • Pumps
    • Hydration Packs
    • Bike Racks
    • Mudguards
    • Locks
    • Water Bottles
    • Water Bottle Cages
    • Miscellaneous
    • Computers
    • Pannier Racks
    • Helmet Cameras
    • Child Seats
Components / Brakes
Sale!
Hayes Dominion A2 Mountain Bike Disc Brake

Hayes Dominion A2 Mountain Bike Disc Brake

$109.99 Original price was: $109.99.$76.99Current price is: $76.99.

Clear
SKU: prod188903 Categories: Brakes, Components Tag: Hayes
  • Your satisfaction is 100% guaranteed.
  • Safe Payments, Happy Customers
  • 7 Days of Hassle-Free Returns
  • Peace of Mind with Every Purchase
Browse
  • Accessories
    • Bags
    • Baskets
    • Bells
    • Bike Covers
    • Bike Racks
    • Child Seats
    • Computers
    • Cycle Mirrors
    • First Aid Kits
    • Gift Vouchers
    • Helmet Cameras
    • Hydration Packs
    • Keyrings
    • Lights
    • Locks
    • Miscellaneous
    • Mudguards
    • Mugs & Glasses
    • Number Plates & Numbers
    • Pannier Racks
    • Pumps
    • Sunglasses
    • Watches
    • Water Bottle Cages
    • Water Bottles
  • Components
    • Bar End Plugs
    • Bar Ends
    • Bash Guards
    • BMX Seats
    • Bottom Brackets
    • Brake Cables
    • Brake Levers
    • Brake Pads
    • Brake Spares
    • Brakes
    • Cassettes
    • Chain Guides
    • Chain Tugs
    • Chainring Bolts
    • Chainrings
    • Chains
    • Crank Bolts
    • Cranksets
    • Derailleurs
    • Gear Cables
    • Gear Shifters
    • Grips
    • Groupsets
    • Handlebar Tape
    • Handlebars
    • Headset Spacers
    • Headsets
    • Pedals
    • Pegs
    • Power Meters
    • Rear Shock Springs
    • Rear Shocks
    • Saddles
    • Seatclamps
    • Seatposts
    • Stems
  • Frames & Forks
    • BMX Frames
    • Cyclo-X Frames
    • Forks
    • Frame Protection
    • Frame Spares
    • MTB Frames
    • Road Frames
  • Uncategorized
  • Wheels & Tyres
    • Hubs
    • Nipples
    • Quick Releases
    • Rim Tape
    • Rims
    • Spokes
    • Tubeless Kits
    • Tubes
    • Tyres
    • Valve Caps
    • Wheels
  • Description
  • Additional information
  • Reviews (0)

Hayes Dominion A2 Mountain Bike Disc Brake

Ready for fast and fun MTB adventures, this disc brake offers smooth and consistent braking performance on the most unpredictable off-road rides. It features a standard sized brake lever with tool-free reach adjust, which means that you can fine-tune it to perfectly match your hand size, riding preferences as well as the terrain conditions. Hayes has also equipped this standard sized model with a two-piston caliper that provides fast and reliable braking as you blast across the rock garden, tree roots and debris at speed.

Expanding on the award-winning Dominion A4. The, Dominion A2, targets Cross Country and Trail riders. Dominion A2 features a two-piston caliper. Dominion A2 includes all the performance from the Dominion A4, utilizing a compact, two-piston caliper.

Dominion A2 features the proprietary QuickBite² system for fast and consistent burnish, coupled with our D-Series rotor (sold separately) to manage the heat with less braking noise.

Features:

  • Use: Cross Country, MTB
  • Piston: 2-piston
  • Type: Disc brake
  • Fluid: DOT 5.1
  • Lever Size: Standard
  • Hayes: Hayes K2 hose
  • Rotors: Sold separately
  • Caliper Mount: 74mm post mount
  • Pad Type: T106 Semi-Metallic (Included), T100 Sintered Metallic (Included)
  • Reach Adjust:Tool-free reach adjust
  • Pad Contact Adjust: Tooled
  • Lever Pivot: Sealed cartridge bearings
  • Caliper Alignment: Crosshair
  • Weight: 303g

Buy Hayes Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.

Select Colour

Black-Grey, Bronze

Select Option

Front, Rear

Reviews

There are no reviews yet.

Be the first to review “Hayes Dominion A2 Mountain Bike Disc Brake” Cancel reply

Related products

Sale!
PROLOGO Scratch X8 CPC Tirox Saddle
Quick View

Components

PROLOGO Scratch X8 CPC Tirox Saddle

$129.99 Original price was: $129.99.$90.99Current price is: $90.99.
Sale!
Sixpack Racing Sixpack Pedal Seal
Quick View

Components

Sixpack Racing Sixpack Pedal Seal

$1.49 Original price was: $1.49.$1.04Current price is: $1.04.
Sale!
Brand-X Integrated IS42 - IS52 Tapered Headset
Quick View

Components

Brand-X Integrated IS42 – IS52 Tapered Headset

$9.99 Original price was: $9.99.$6.99Current price is: $6.99.
Sale!
Shimano Disc Brake Hose
Quick View

Brake Spares

Shimano Disc Brake Hose

$26.99 Original price was: $26.99.$18.89Current price is: $18.89.
Sale!
E-thirteen E Thirteen Plus 35 Mountain Bike Handlebar
Quick View

Components

E-thirteen E Thirteen Plus 35 Mountain Bike Handlebar

$54.99 Original price was: $54.99.$38.49Current price is: $38.49.
Sale!
SRAM S900 Aero HRD Road Disc Brake
Quick View

Brakes

SRAM S900 Aero HRD Road Disc Brake

$250.00 Original price was: $250.00.$97.99Current price is: $97.99.
Sale!
FSA Bosch Plastic Chainguard
Quick View

Components

FSA Bosch Plastic Chainguard

$3.99 Original price was: $3.99.$2.79Current price is: $2.79.
Sale!
Shimano XT MT8120 Rear Hydraulic Disc Brake
Quick View

Brakes

Shimano XT MT8120 Rear Hydraulic Disc Brake

$161.99 Original price was: $161.99.$98.99Current price is: $98.99.
LEGAL
  • Privacy Policy
  • Shipping Policy
  • FAQ
  • Returns & Exchanges
  • Term and Conditions
CUSTOMER SERVICE
  • My account
  • Delivery
  • Payment Method
  • Contact Us
  • About Us
Signup for Newsletter

Sign up for exclusive offers, original stories, events and more.

    Products
    • FSA Alloy Mountain Bike Bash Ring FSA Alloy Mountain Bike Bash Ring $2.99 Original price was: $2.99.$2.09Current price is: $2.09.
    • Race Face Light Mountain Bike Bash Ring Race Face Light Mountain Bike Bash Ring $37.99 Original price was: $37.99.$26.59Current price is: $26.59.
    Copyright 2026 © www.cheapbikepartsshop.com
    • Components
      • Derailleurs
      • Headsets
      • Handlebars
      • Pedals
      • Saddles
      • Seatposts
      • Brakes
      • Stems
      • Brake Pads
      • Cassettes
      • Cranksets
      • Gear Shifters
      • Bottom Brackets
      • Chains
      • Grips
    • Wheels & Tyres
      • Wheels
      • Tyres
      • Hubs
      • Tubes
      • Rims
      • Tubeless Kits
      • Quick Releases
      • Rim Tape
      • Spokes
      • Valve Caps
      • Nipples
    • Frames & Forks
      • Frame Spares
      • Forks
      • MTB Frames
      • Frame Protection
      • Road Frames
      • BMX Frames
      • Cyclo-X Frames
    • Accessories
      • Bags
      • Lights
      • Sunglasses
      • Pumps
      • Hydration Packs
      • Bike Racks
      • Mudguards
      • Locks
      • Water Bottles
      • Water Bottle Cages
      • Miscellaneous
      • Computers
      • Pannier Racks
      • Helmet Cameras
      • Child Seats
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.