The Dominion A4 disc brake set by Hayes

The Hayes Dominion A4 disc brake set 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:

2 x Hayes Dominion A4 disc brakes (front and rear wheel)
2 pairs of Hayes semi-metal brake pads
2 pair of Hayes sintered metal brake pads
2 x Hayes pad spacers
2 x Hayes bleed block
1 x olive incl. insert
6 x Hayes bolts
4 x washer
not incl. brake rotor
not incl. disc brake adapter

Hayes Dominion A4 Disc Brake Set (front/rear) stealth-black/grey