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    • Hayes Dominion A4 SFL Brake Kit

  • Hayes Dominion A4 SFL Brake Kit

    Featuring Hayes's Small Finger Lever (SFL) design, this mountain bike (MTB) hydraulic disc brake delivers a secure and reliable braking feel. Its award-winning build and intuitive lever design also make it an ideal choice for riders with smaller hands or those who prefer a smaller lever. Developed for precision, this version also comes kitted out with a four-piston caliper for smooth braking control and consistency as you weave your way from trail to trail. Another highlight is this model's range of technologies that include tool-free reach adjustment. As a result, you'll benefit from the simplicity of being able to fine-tune the distance between your handlebar and the brake lever to match your riding style and personal preferences as well as the terrain.

    MTB Disc Brake with Four-Piston Caliper

    Dominion's master cylinder is factory tuned for the shortest dead stroke possible and a crisp bite point. The Dominion A4 caliper utilises four pistons in the most structurally rigid design possible. It features a cold-forged caliper and KingPin structural pad retention bolt that increases stiffness.

    Dual Port Bleed System and DOT 5.1 Fluid

    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 also features the proprietary QuickBite² system for fast and consistent burnish, when coupled with the D-Series rotor (available separately) to manage the heat with less braking noise.

    The Hayes Dominion A4 SFL Brake Kit is a perfect choice of upgrade for riders with smaller hands who want to enjoy reliable braking performance on the trails.


    • Lever Type: Small Finger Lever (SFL)
    • Caliper Type: 4-piston
    • Use: Mountain Bike (MTB)
    • Bleed System: 2-Stroke Dual Port Bleed System
    • Reach Adjustment: Tool-Free Reach Adjustment
    • Lever Pivot: Sealed Cartridge Bearings Lever Pivot
    • Fluid Type: DOT 5.1 Fluid
    • Hose Length: Front: 100cm; Rear: 180cm
    • Not Included: Rotors and brackets are available separately
    • Single or Pair: Single
    • Weight: 310g (100cm hose and mount hardware)

    Manufacturer's Part Numbers:

    • 95-36115-K053 Black/Grey One Size Front
    • 95-36115-K054 Black/Grey One Size Rear

    Buy Hayes Components from Chain Reaction Cycles, the World's Largest Online Bike Store.


    • Couleur : Noir-Gris
    • Option: Avant, Arrière



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