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    • Hayes Dominion A4 J-Unit Disc Brake

  • Hayes Dominion A4 J-Unit Disc Brake

    This brilliant disc brake is specifically engineered for MTB use as it gives you powerful and reliable stopping performance. It features a four piston caliper that's designed especially for the rigors of DH and enduro racing as it meets the demands of the most aggressive trail conditions and riders. Providing a firm engagement between the pads and rotors, its caliper keeps you in full control thanks to its fast and precise braking power.

    Low-Effort MTB Disc Brake

    Whether you're competing or riding after work with your buddies, this version's solid lever features a specific pull curve to balance on-demand pressure modulation with ease. As a result, you'll be able to enjoy its simple and easy to pull design for an effortless braking feel and control as you weave between the trails.

    Perfect for riders with smaller hands, this SFL (Small Freaking Lever) version makes it incredibly easy to actuate as you carve your way across the mountain. To top it off, its K2 hose is constructed from a woven Kevlar construction to provide the stiffest hose possible for maximum power transmission.


    • Use: MTB
    • Type: SFL (Small Freaking Lever) version
    • Piston: 4-piston
    • Caliper: 74mm post-mount
    • Brake Fluid: DOT 5.1
    • Hose: K2 hose from woven Kevlar
    • Weight: 303g (approx)

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


    • Colour: Bronze
    • Option: Rear, Front
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    RRP 2350.00SEK
    2195.00 SEK 2195.00
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