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Hayes Dominion A4 Stealth SFL disc brake black/gray

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  • Introducing the all-new, Stealth Dominion, our award-winning Hayes Dominion A4 brakes are back – adding even more ways for you to stop!

    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.

    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.

    Available in SFL (Small Finger Lever) - ergonomically tailored for the smaller hand.

    • Tool-Free Reach Adjustment
    • Flip-Flop Lever Orientation
    • King Pin Pad Retention
    • Crosshair Caliper Alignment
    • Two-Stroke Dual-port bleed system


    • 310g (100cm hose and mount hardware)
    • DOT 5.1 Fluid
    • Tool-Free Reach Adjustment
    • 2-Stroke Dual Port Bleed System
    • Sealed Cartridge Bearings Lever Pivot
    • 100cm Front Hose Length
    • 180cm Rear Hose Length


    LOW INPUT - HIGH FIDELITY (LOFI)
    Low effort system with predictable, progressive ramp up and a crisp bite point.

    LOADED WITH TECH
    Reduced Friction - A featherlight lever feel is acheived through a combination of an added glide ring on the piston and sealed ball bearings at the lever blade pivot
    SRL - Our Stable Rate Link delivers a consistent lever ratio regardless of reach
    Precise Engagement - Each Dominion is factory set to have the lowest dead stroke possible and a crisp bite point.
    Built to last - Metal pistons are used to ensure that no matter the terrain or temperature your brake will continue to perform as it did on the first ride
    Adjustable Reach - Adjust your lever reach with ease while on the trail thanks to an intuive adjustment knob design

    MODAL RESONANCE CANCELLATION (MRC)
    FEA-optimized modal shapes of D-Series rotors are intentionally designed to oppose those of Semi-Met T106 and Sintered T100 pads, canceling out noise and vibration.

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    • Pre-bled and assembled with Hayes K2 hose
    • front: 100 cm hose
    • rear: 180 cm hose
    • incl. brake pads
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