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High braking power with 4-Piston: Disc Brake Dominion A4 from Hayes 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. Rotor and Adapter not included!
- Tool-Free Reach Adjustment
- Flip-Flop Lever Orientation
- King Pin Pad Retention
- Crosshair Caliper Alignment
- Two-stroke dual-port bleed system