• -30%
  • Pack
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Brakes HAYES Dominion A4 | black-grey | RRL + Brake discs HAYES D-Series (203mm+203mm)
Brakes HAYES Dominion A4 | black-grey | RRL standard lever | front + back
Brake HAYES Dominion A4 | black-grey | RRL standard lever
Brake HAYES Dominion A4 | black-grey | RRL standard lever
Brake HAYES Dominion A4 | black-grey | RRL standard lever
Brake HAYES Dominion A4 | black-grey | RRL standard lever
Brake HAYES Dominion A4 | black-grey | RRL standard lever
Brake HAYES Dominion A4 | black-grey | RRL standard lever
Brakes HAYES Dominion A4 | black-grey | RRL standard lever | front + back
Brake HAYES Dominion A4 | black-grey | RRL standard lever
Brake HAYES Dominion A4 | black-grey | RRL standard lever
Brake HAYES Dominion A4 | black-grey | RRL standard lever
Brake HAYES Dominion A4 | black-grey | RRL standard lever
Brake HAYES Dominion A4 | black-grey | RRL standard lever
Brake HAYES Dominion A4 | black-grey | RRL standard lever

Brakes HAYES Dominion A4 | black-grey | RRL + Brake discs HAYES D-Series (203mm+203mm)

95-36115-K003
HAYES

A set of disc brakes HAYES Dominion A4, which receives great feedback from every rider who tries it! The HAYES Dominion A4 4-piston brake can handle any demanding situation, from Trail riding, to All-Mountain, Enduro, Freeride and Downhill. This brake can handle a lot and features great technologies such as QuickBite² (very short deadstroke), a dual bleeding system, a cold-forged extremely strong caliper and DOT 5.1 brake fluid that can withstand high temperatures. The brake lever is Flip-Flop or reversible so you can use it on the left or right side of the handlebar. Included in the package are 2 HAYES Dominion A4 brakes including accessories and 2x HAYES D-Series discs.

9,835 Kč
14,050 Kč

Brake lever

  • brake lever body is made of forged aluminium alloy
  • Ergonomic aluminium brake lever with a very soft step thanks to the roller bearings
  • the end of the lever is fitted with small dimples at the end for firm contact between the gloved finger and the lever surface
  • the lever can be combined with adapters for attaching the gearshift directly to the brake lever sleeve
  • the lever can be used on the left or right side of the handlebar (flip-flop)
  • the lever can be removed from the handlebars without removing the grips or the shifter
  • precision engineered and tested hydraulic axial system using DOT 5.1 brake oil
  • Brake lever piston has a conical seal and a special slip ring to reduce friction
  • the HAYES Dominion A4 brake lever can be adjusted for the distance between the lever and the handlebars (by turning the wheel on the end lever)
  • with the HAYES Dominion A4 brake lever it is possible to adjust the dead lever step using a 2mm inbus key (by default the shortest possible step is set)
  • the HAYES Dominion lever has been designed to have the shortest possible deadstroke - i.e. the time without the onset of brake power (pad and disc contact)
  • the fluid reservoir is large so that there is no risk of air entering the system even with significant pad wear
  • Standard Reach Lever (RRL) = standard distance of lever blade from handlebars

Brake caliper

  • the caliper is made of cold forged aluminium
  • the caliper is made of two separate pieces and connected by two large screws
  • further increase in the strength of the caliper is provided by the locking screw of the plates called King Pin
  • The HAYES Dominion A4 caliper is a 4-piston caliper, i.e. it contains a set of 4 independent pistons
  • the large 17mm pistons give the brake high performance in all situations
  • the pistons are made of lightweight aluminium alloy to ensure rapid heat transfer to the caliper from where it is then transferred to the surrounding area
  • the pistons are fitted with a square (in cross-section) seal, which has specific elastic properties to maintain perfect retraction even at high pad run-out
  • the caliper is equipped with an expansion spring between the brake pads
  • the pads are secured in the caliper by a locking screw (HAYES King Pin)
  • the caliper is supplied with semi-metallic brake pads T106 (installed in the brake caliper), but also sintered pads T100
  • this is a version of the pads that is joined into one via 2-pistons on each side
  • WARNING: the pads must be run in before use, or the bed-in process (repeated running and smooth braking)
  • swivel banjo brake hose connection, which allows the hose to be directed away from the caliper and towards the wheel
  • post mount or PM mounting of the brake caliper
  • detailed adjustment of the caliper and alignment to the disc is possible by means of small worms on the post mount (crosshair system)
  • M6 screws for mounting the caliper to the frame or fork (using an inbus wrench) are also included
  • precision engineered and tested hydraulic system using DOT 5.1 brake oil
  • Two-Stroke bleed port system allows you to bleed separately without having to pull fluid through the lever

Brake hose

  • brakes are supplied with Kevlar hydraulic hose HAYES K8 with inner diameter (ID) 2.5mm outer diameter (OD) 5.5mm
  • the length of the unshortened hose is 1800mm (rear brakes) or 1000mm (front brake)
  • parts for shortening the hose to the desired length are also included in each pack of the brake (1x hose insert / 1x hose olive)

Disc otor

  • supplied with HAYES D-Series brake discs
  • default disc width = 1.95mm
  • minimum disc width = 1.7mm
  • disc mounting on hub = 6 screws (IS)

Weight

  • weight of whole brake is 310g (including 1000mm hose lenght and M6 tightening bolts, without rotor)
  • weight of single 203mm brake rotor = 188g (+15g bolts)

Package includes

  • 1x brake HAYES Dominion A4 (with 1000mm hose lenght)
    • lever + hose + caliper / filled and ready for immediate use
  • 1x brake HAYES Dominion A4 (with 1800mm hose lenght)
    • lever + hose + caliper / filled and ready for immediate use
  • 2x disc brake rotor HAYES D-Series 203mm
  • 2x HAYES hose olive
  • 2x HAYES hose insert
  • 4x M6 bolt (inbus 6mm) for tightening of the caliper on fork / frame
  • 4x washer below M6 bolt
  • 2x HAYES manual
  • 2x HAYES transportation insert
  • 2x HAYES bleed block with integrated caliper piston cleaning and lubrication system
  • 2x semi-metallic brake pads HAYES T106
  • 2x metallic brake pads HAYES T100

Shiffter adapters (not included)

  • brakes can be combined with SRAM or SHIMANO shifter mounts (it is necessary to buy HAYES adapters directly)

Important information

Read the manual supplied with each brake carefully for correct brake installation!

Video - HAYES Dominion brake technical informations

Video - HAYES Dominion brake - installation

Video - HAYES Dominion brake - hose shortening

Video - HAYES Dominion brake - standard bleeding procedure

Video - HAYES Dominion brake - caliper Two Port bleeding procedure 

Video - HAYES Dominion brake - caliper piston cleaning and lubrication

Video - HAYES Dominion brake - change of the lever blade

Video - HAYES Dominion brake - change of the brake pads

95-36115-K003
2 Items

Data sheet

Brake pad compound
Semi-metallic
Sintered
Lever brake position
Left hand
Right hand
Brake caliper pistons
4-piston
Brake caliper mount
Post Mount (PM)
Brake rotor mount
6-bolt (IS)
Rotor diameter
203mm
Brake lever blade
Regular Reach Lever (RRL)
Brake type
Disc brake
Brake pad model
T100
T106
Rotor model
HAYES D-Series
Brake hose type
Kevlar | 5.5mm
Disc rotor type
Standard
Model series HAYES
Dominion A4

Specific References

Brakes HAYES Dominion A4 | black-grey | RRL + Brake discs HAYES D-Series (203mm+203mm)

14,050 Kč 9,835 Kč