Hayes Dominion A2 J-Unit MTB Disc Brake

Code: prod188904

Hayes Dominion A2 J-Unit Disc Brake Bronze Front

Hayes Dominion A2 J-Unit Disc Brake

Ready for fast and fun MTB adventures, this disc brake offers smooth and consistent braking performance on the most unpredictable off-road rides. It features a Small Finger brake lever with tool-free reach adjust, which means that you can fine-tune it to perfectly match your hand size, riding preferences as well as the terrain conditions. Hayes has also equipped this model with a two-piston caliper that provides fast and reliable braking as you blast across the rock garden, tree roots and debris at speed.

Expanding on the award-winning Dominion A4. The, Dominion A2, targets Cross Country and Trail riders. Dominion A2 features a two-piston caliper. Dominion A2 includes all the performance from the Dominion A4, utilizing a compact, two-piston caliper. With this SFL option, the Dominion is the ideal brake option for any rider with smaller hands. Hayes product development team set out to design a brake system specifically designed for a smaller ergonomic profile.

Dominion SFL maintains all the power and feel of our proven Dominion A4, and accomplishes this using a specifically designed smaller and narrower brake lever.

Dominion A2 features the proprietary QuickBite² system for fast and consistent burnish, coupled with the D-Series rotor (sold separately) to manage the heat with less braking noise.

This is the SFL (Small Finger Lever) option - ergonomically tailored for the smaller hand.

  • Use: Cross Country, MTB
  • Piston: 2-piston
  • Type: Disc brake
  • Lever: Small finger lever
  • Fluid: DOT 5.1
  • Hayes: Hayes K2 hose
  • Rotors: Sold separately
  • Caliper Mount: 74mm post mount
  • Pad Type: T106 Semi-Metallic (Included), T100 Sintered Metallic (Included)
  • Reach Adjust:Tool-free reach adjust
  • Pad Contact Adjust: Tooled
  • Lever Pivot: Sealed cartridge bearings
  • Caliper Alignment: Crosshair
  • Weight: 303g
  • Colour: Bronze
  • Size: Rear


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

Order Details
    Image Product Code Name Brand Price Stock QTY
    sku742434 Bronze Front Hayes £179.99 In stock
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