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Dominion A4 Brakes (Hydraulic)
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 Set Front
From: US$297.00
To: US$310.38
Hayes' award winning Dominion brake
Available as A4 (4 piston) or A2 (2 piston)
Front set with shorter cable
Piston caliper with cross-hair alignment
Flippable lever with reach adjustment
Option of Standard (BFL) or Small Form Lever (SFL; designed 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
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
Use our Dominion Brake Builder to purchase your Hayes Dominion brake with rotors & adapters Learn More -
Hayes Dominion Brake Set Rear
From: US$297.00
To: US$310.38
Hayes' award winning Dominion brake
Available as A4 (4 piston) or A2 (2 piston)
Rear set with longer cable
Piston caliper has cross-hair alignment
Flippable lever with reach adjustment
Option of Standard (BFL) or Small Form Lever (SFL; designed 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
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
Use our Dominion Brake Builder to purchase your Hayes Dominion brake with rotors & adapters Learn More -
Dominion/Shimano I-Spec II Clamp (Hayes)
US$57.61In 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$57.61In stock
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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
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