
HayesDominion T2
Not listed on Hayes' EU store; US store shows US$162.49 per brake (tagged sale/closeout)
- Pistons
- 2 x 24 mm
- Fluid
- DOT 5.1
- Hose
- K2, 100 cm front / 180 cm rear
- Lever
- Carbon fibre, tooled reach & pad-contact adjust
- Weight
- 254 g
- Weight
- 254 gper brake, claimed
Overview
Hayes' limited-edition lightweight two-piston Dominion with carbon lever (254 g claimed, 24 mm pistons); US$162.49 per brake on Hayes' US store, flagged as sale/closeout.
The limited-edition Dominion T2 is the lightweight two-piston version of the Dominion, built with a Reynolds-designed, in-house-produced carbon-fibre lever, titanium hardware, composite reservoir cover, aluminium-backed pads and weight-reducing machining. Hayes says it is 50 g lighter per brake than the Dominion A2, at 254 g.
It keeps the Dominion's DOT 5.1 hydraulics with Two-Stroke dual-port bleed and K2 hose, 24 mm caliper pistons, Crosshair caliper alignment and a sealed cartridge-bearing lever pivot, and adds tooled reach and pad-contact adjustment with axial lever orientation.
- 254 g per brake, 50 g lighter than the A2
- Reynolds carbon lever, titanium hardware
- 24 mm caliper pistons
- Tooled reach and pad-contact adjust
- DOT 5.1, Two-Stroke dual-port bleed
Gallery




Full specifications
Caliper
- Caliper piston diameter
- 24 mm
- Alignment
- Crosshair caliper alignment
- Pads
- Aluminium backing plates
Lever
- Reach adjust
- Tooled
- Pad contact adjust
- Tooled
- Lever orientation
- Axial
- Lever pivot
- Sealed cartridge bearings
- Materials
- Carbon-fibre lever, composite reservoir cover, titanium hardware
Hydraulics
- Fluid
- DOT 5.1
- Bleed
- 2-Stroke dual-port bleed system
- Hose
- K2 hose
- Hose length
- 100 cm front / 180 cm rear
General
- Weight
- 254 g
- US price
- US$162.49 per brake (sale)
Manufacturer specification — Hayes. Specs and prices can change; check with the brand or your dealer.
Hayes Dominion versions compared
| Dominion A4 | Dominion T4 | Dominion A2 | Dominion T2 | |
|---|---|---|---|---|
| Price | €278 | — | €139 | — |
| Pistons | 4 x 17 mm | 4 x 17 mm | 2 x 24 mm | 2 x 24 mm |
| Fluid | DOT 5.1 | DOT 5.1 | DOT 5.1 | DOT 5.1 |
| Hose | Kevlar, 180 cm | — | Kevlar, 100 cm front / 180 cm rear | K2, 100 cm front / 180 cm rear |
| Bleed | Two-Stroke dual port | — | — | — |
| Lever | Tool-free reach adjust; SRL short-reach option | Carbon fibre, tooled reach & pad-contact adjust | Tool-free reach adjust; SRL option | Carbon fibre, tooled reach & pad-contact adjust |
| Weight | 310 g | 257 g | 303 g | 254 g |
| Rotor sizes | — | 160 / 180 / 203 mm (D-Series) | — | — |
| Weight | 310 g | 257 g | 303 g | 254 g |
| E-bike rated | Yes | — | — | — |
eMTBs that come with the Hayes Dominion
Hayes Dominion T2: FAQ
How much does the Hayes Dominion T2 weigh?
Hayes quotes 254 g (per brake, claimed).
Is the Hayes Dominion T2 suitable for e-bikes?
Hayes does not specifically rate it for e-bikes. Check the manufacturer’s approval and your bike maker’s recommendations before fitting it to an eMTB.
What are the key specs of the Hayes Dominion T2?
Pistons: 2 x 24 mm; Fluid: DOT 5.1; Hose: K2, 100 cm front / 180 cm rear; Lever: Carbon fibre, tooled reach & pad-contact adjust; Weight: 254 g.
What other versions of the Hayes Dominion are there?
Dominion A4 (€278), Dominion T4, Dominion A2 (€139).



