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Dominion A4 Brakes
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.
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Hayes Dominion Brake Builder
From: US$28.42
To: US$1,066.29
Hayes' award winning Dominion Brake is a now a whole range
Learn More
4 piston, 2 piston, with levers for large or small hands. -
Hayes Dominion A4 Brake Set Front
US$307.89In stock
Hayes brand new brake for 2018 - the Dominion A4
Learn More
Four piston caliper with cross-hair alignment
Flippable lever with reach adjustment
Dead stroke is factory set
Pre-bled with 90 cm hose for front use
Uses DOT 5.1 fluid
Fits 74 mm post mount brackets and adapters
Works best with Hayes D series rotors
Available direct from Shockcraft or via your local bike shop -
Hayes Dominion A4 Brake Set Rear
US$307.89In stock
Hayes brand new brake for 2018 - the Dominion A4
Learn More
Four piston caliper with cross-hair alignment
Flippable lever with reach adjustment
Dead stroke is factory set
Pre-bled with 180 cm hose for rear use
Uses DOT 5.1 fluid
Fits 74 mm post mount brackets and adapters
Works best with Hayes D series rotors
Available direct from Shockcraft or via your local bike shop -
Hayes Dominion A4 JUnit SFL Brake Set Front
US$307.89Backorder ex-USA
Hayes new brake for 2020 - the Dominion A4 JUnit SFL
Learn More
SFL is a Small Form Lever
Small Form Levers are designed for anyone with smaller hands (not just junior riders) - Ellen at Shockcraft/Biken uses SFL on her Dominion brakes
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 -
Hayes Dominion A4 JUnit SFL Brake Set Rear
US$307.89Backorder ex-USA
Hayes new brake for 2020 - the Dominion A4 JUnit SFL
Learn More
SFL is a Small Form Lever
Small Form Levers are designed for anyone with smaller hands (not just junior riders) - Ellen at Shockcraft/Biken uses SFL on her Dominion brakes
Designed for anyone with smaller hands (not just junior riders) - Ellen at Shockcraft/Biken uses the SFL levers on her Dominion brakes
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 -
Hayes Dominion Lever Assembly
Includes master cylinder and lever blade
Lever is SFL type (Small Form Lever) for smaller hands
Small Form Levers are designed for anyone with smaller hands (not just junior riders) - Ellen at Shockcraft/Biken uses SFL on her Dominion brakes
Same part for left and right
Lever blade can be swapped to larger size
Hayes Part Number: 98-36118-K101 Learn More -
JUnit Brake Builder
From: US$28.42
To: US$1,066.29
Hayes' award winning Dominion Brake is a now a whole range
Learn More
4 piston, 2 piston, with levers for large or small hands. -
D Series Brake Rotor 160 mm (Hayes)
US$84.92In stock
160 mm (6") Rotor D series for Hayes Dominion
Learn More
Designed to minimise noise making harmonics
Works with all Hayes brakes
6 bolt mounting
Supplied with T25 mounting screws & T25 wrench
Hayes Part Code: 98-36153-K003 -
D Series Brake Rotor 180 mm (Hayes)
US$84.92In stock
180 mm (7") Rotor D series for Hayes Dominion
Learn More
Designed to minimise noise making harmonics
Works with all Hayes brakes
6 bolt mounting
Supplied with T25 mounting screws & T25 wrench
Hayes Part Code: 98-36153-K002 -
D Series Brake Rotor 203 mm (Hayes)
US$84.92In stock
203 mm (8") Rotor D series for Hayes Dominion
Learn More
Designed to minimise noise making harmonics
Works with all Hayes brakes
6 bolt mounting
Supplied with T25 mounting screws & T25 wrench
Hayes Part Code: 98-36153-K001 -
Dominion/Shimano I-Spec II Clamp (Hayes)
US$59.72In stock
Allows fitment of Shimano Ispec II shifters to Hayes brakes
Learn More
Hayes Part Code: 98-36137-K001 -
Dominion/SRAM Peacemaker Clamp (Hayes)
US$59.72In stock
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Dominion A4 T100 Sintered Metallic Brake Pads (Hayes)
US$56.84Available on backorder
Replacement pads for Hayes Dominion A4 brakes with 4 piston calipers
Learn More
T100 sintered metallic compound for excellent life, power and fade resistance
Hayes Part Code: 98-36141-K001 -
Dominion A4 T106 Semi Metallic Brake Pads (Hayes)
US$56.84In stock
Replacement pads for Hayes Dominion A4 brakes with 4 piston calipers
Learn More
T106 semi metallic compound for quiet performance
Hayes Part Code: 98-36141-K002
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