HAYES disc brake Dominion A4 | stealth black - gray | single brake
Braking power is everything. That was the challenge that the engineers at Hayes set themselves. The result is the completely newly developed Dominion A4.
The sensor on the lever is adjusted at the factory for the shortest possible free travel in order to generate a crisp response as soon as it is actuated. Four pistons are installed in the cold-forged, rigid brake calliper in order to be able to use the largest possible brake pads and thus generate maximum braking force. The generous dimensions of the brake calliper also have a positive effect on heat management. The crosshair caliper alignment system makes mounting and aligning your brake caliper much easier. The brake calliper can be adjusted quickly, precisely and without grinding using two grub screws on the side.
The motorsport-inspired two-stroke dual-port bleeding system guarantees that no air bubble has a chance to hide and you always have optimum performance. The line is reinforced with Kevlar threads to withstand possible damage and prevent the DOT 5.1 brake fluid from spreading on the trail. This also ensures a precise pressure point at all times.
In order to be able to adapt the brake system to your personal requirements, Hayes supplies it with two different pads. One is semi-metallic and the other is a pair of sintered pads. The former are easier to modulate and have a lower tendency to squeal, while the metallic (sintered) brake pads wear less due to their harder material and are much more stable. However, they are somewhat noisier.
Technical data:
Area of application: Downhill / Freeride, Enduro, All Mountain, Trail, E-MTB
Brake caliper material: Aluminum
Brake lever material: Aluminum
Mounting bolt material: Steel
Piston: 4
Brake mounting: Postmount
Brake rotor: without (Hayes D-Series recommended)
Brake fluid: DOT 5.1
Brake hose: Plastic with Kevlar
Brake pad: semi-metallic + sintered (metallic)
Grip width adjustment: yes, tool-free
Pressure point adjustment: yes
Mounting: left or right (flip-flop)
Clamp: split
Cable length: 1000 mm (VR) or 1800 mm (HR)
Color: black-grey, white decals
Weight according to manufacturer: 310g (front brake, 100 cm cable)
Weight self-weighed: 318g (front brake), 339g (rear brake)
Scope of delivery:
1x HAYES disc brake Dominion A4 stealth black / gray | single brake front OR rear, WITHOUT brake disc and adapter
1 pair of semi-metallic brake pads
1 pair of sintered brake pads
1x pair of fixing bolts/washers
1x support sleeve, olive and union nut
1x bleeding block