Dominion A4 by Hayes Disc Brake

By Hayes
Posted on Jul 09, 2018

Hayes (USA) – Press Release: Dominion A4.

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 shorted 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.

Technologies:

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 guess work and trial and error
- Makes set up process quick and easy for ‘out of the box’ builds
KingPin – Structural caliper pad pin
LoFi (Low input / High Fidelity) – Speaks to the overall system feel. MC dead stroke tech / cam profile / feel
MRC (Modal Resonance Cancelation) – Rotor harmonic design
- All objects have a resonant frequency
- The FEA-optimized modal shapes of D-Series rotors is intentionally designed to oppose that of Semi-Met T106 and Sintered T100 pads; this cancels out noise and vibration translating into more consistent braking
- 95mm material thickness enhances heat dissipation
QuickBite² – Offers riders the shortest path to high performance
- Fast, consistent burnish
- Predictable performance
- Quiet
Two Stroke – Dual caliper bleed ports for maximum bleed integrity