HAYES disc brake Dominion A2 / A4 | Trail set
With this set, consisting of a Dominion A4 for your front wheel and the Dominion A2 for the rear, you can build the ultimate trail brake on your bike.
The four pistons on the front wheel create maximum deceleration and the two pistons on the rear wheel can be dosed perfectly.
Front brake:
Braking power is everything. That was the challenge that the engineers at Hayes faced. The completely new Dominion A4 was created.
The sensor on the lever is factory-set to the shortest possible free travel in order to generate a crisp pressure point immediately when pressed. Four pistons are built into the cold-forged, rigid brake caliper in order to be able to use the largest possible brake pads and thus generate maximum braking force. The generous dimensions of the brake caliper also have a positive impact on heat management. The Crosshair Caliper Alignment System significantly simplifies the assembly and alignment of your brake caliper. With two grub screws on the side, the brake caliper can be adjusted quickly, precisely and without grinding.
Rear brake:
Based on the proven Dominion A4, Hayes has developed a two-piston variant that is at home on the trails and in cross country.
The brake caliper was adapted from the Dominion A4 and guarantees high braking power and perfect heat management. There is an adjustment for the free travel on the lever and the associated position of the master piston. The brake promises to be intuitive and to have a defined increase in braking force when the pads hit, which ensures high predictability and control. Hayes is also particularly proud of the new bleeding system: The brake caliper is equipped with two bleeding openings, which are to ensure optimal bleeding of the system.
The position of the brake caliper on the brake calliper mount can be perfectly adjusted using a 2 mm grub screw.
The two-stroke dual-port bleeding system inspired by motorsport simplifies the maintenance of your brakes and you always have the best performance. The brake line is reinforced with Kevlar to best withstand possible damage and not to spread the DOT 5.1 brake fluid on the trail.
Technical specifications:
intended use : trail, cross country, enduro
Brake caliper material: aluminum
Brake lever material: aluminum
Material fastening screws: steel
Pistons: 4 front, 2 rear
Brake assembly: Postmount
Brake disc: none (Hayes D-Series recommended)
Brake medium: DOT 5.1
Brake line: plastic with Kevlar
Brake pad: semi-metallic, sintered
Reach adjustment: yes, without tools
Pressure point adjustment: yes
Assembly: left or right (flip flop)
Clamp: split
Cable length: 1000 mm (front) and 1800 mm (rear)
Color: Black
Weight according to the manufacturer: 310g (Dominion A4 brake front, 90 cm cable including fastening material without brake discs and adapter)
Weight weighed:
Scope of delivery:
1x HAYES disc brake Dominion A2 / A4 | Trail Set | A4 front and A2 rear without brake disc and adapter!
1 pair of semi metallic brake pads for A4
1 pair of semi metallic brake pads for A2
1 pair of sintered brake pads for A4
1 pair of sintered brake pads for A2