Hayes Dominion A4 Disc Brake

The Dominion A4 disc brake by Hayes - for the right amount of braking power

The Hayes Dominion A4 disc brake combines high braking power with a smooth lever feel and good modulation. The new dual port bleeding system is inspired by motorcycle racing and offers easy maintenance and improved brake functionality. Constant modulation over the entire lever travel ensure excellent lever control. The King Pin, which secures the specially developed pads, has an additional stiffening effect on the cold forged brake caliper. The hydraulic system is designed for easy maintenance and ultimate performance at any temperature. Minimised reach and a crisp contact point together with powerful braking - that's the Dominion A4.

Specifications:

Series:

Dominion

Application:

All Mountain, Enduro, Downhill

Type:

hydraulic, 4 pistons

Actuation:

DOT 5.1

Hose:

Kevlar

Hose Length (Front/Rear):

1000 mm / 1800 mm

Technical Information - Caliper:

Caliper Mount:

post mount

Pistons:

4

Pads:

sintered metal, semi-metal

Design:

two-part

Calliper Material:

aluminium

Hose Connection:

banjo

Technical Information - Lever:

Lever Length:

1-finger

Adjustment Options:

reach adjust (no tools required)

Mount:

clamp (split)

Design:

Flip-Flop (without specific side)

Brake Lever Material:

aluminium

Brake Lever Housing Material:

aluminium

Hose Connection:

straight

Features:

• with adapters compatible with SRAM Matchmaker or Shimano I-Spec II
• optimal bleeding through two bleed openings
• ball bearing lever for better hand feel
• toolless reach width adjustment
• stiff brake caliper thank to King Pin
• Crosshair alignment aid for easy brake caliper mounting
• aluminium pistons

Contents:

• 1 x Hayes Dominion A4 disc brakes (front or rear wheel)
• 1 pairs of Hayes semi-metal brake pads
• 1 pair of Hayes sintered metal brake pads
• 1 x Hayes pad spacer
• 1 x Hayes bleed block
• 1 x olive incl. insert (front only)
• 3 x Hayes bolts
• 2 x washer
• not incl. brake rotor
• not incl. disc brake adapter