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Lightweight with carbon and titaniumHayes pimps two-piston brakes

Sebastian Brust

 · 27.10.2020

Lightweight with carbon and titanium: Hayes pimps two-piston brakesPhoto: Hayes
Lightweight with carbon and titanium: Hayes pimps two-piston brakes
Hayes is back with a factory-tuned two-piston brake and presents the Dominion T2 - a new lightweight MTB disc brake for racers or other lovers of carbon and titanium.

The Hayes Dominion T2 is now the third version of the MTB disc brake from the traditional brand from the USA. In our Brake test one year ago the four-piston Dominion A4 brakes heralded Hayes' comeback in style. Previously, it had been a little quiet around the robust brakes, which were once particularly popular among downhill riders. Since then, the two-piston version Dominion A2 and the SFL brake levers specially designed for small and very small hands have also been released.

And it was precisely the two-piston brake that Hayes took on again with the aim of further reducing the weight. As a result, the American brake specialist has delighted 500 fans with a tuned version of the A2, the Hayes Dominion T2.

The Dominion T2 is the latest version of the MTB disc brake from Hayes.Photo: Hayes The Dominion T2 is the latest version of the MTB disc brake from Hayes. Part of the family: The sister brand Reynolds is responsible for the company's carbon expertise.Photo: Hayes Part of the family: The sister brand Reynolds is responsible for the company's carbon expertise.

Carbon levers from sister brand Reynolds, titanium bolts, composite reservoir covers and brake pads with aluminium backing plates: The classic diet products for MTB brakes quickly melted away a few grams. However, it was only through discreet material cut-outs on the brake calliper that the weight was ultimately reduced by a total of 50 grams per brake. According to the manufacturer, a Hayes Dominion T2 now only weighs around 250 grams each, without disc or adapter.

Pressure point adjustment yes, with a tool. The same applies to the lever width adjustment. The carbon levers with ball bearings are said to be particularly easy to operate.Photo: Hayes Pressure point adjustment yes, with a tool. The same applies to the lever width adjustment. The carbon levers with ball bearings are said to be particularly easy to operate. Wow, double pipe exhaust: each brake piston can be bled separately.Photo: Hayes Wow, double pipe exhaust: each brake piston can be bled separately.
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Titanium screws and holes where there used to be metal save weight. The two grub screws on the mounting holes (crosshair alignment) allow the brake calliper to be easily aligned in the direction of travel.Photo: Hayes Titanium screws and holes where there used to be metal save weight. The two grub screws on the mounting holes (crosshair alignment) allow the brake calliper to be easily aligned in the direction of travel.

The facts about the Hayes Dominion T2

  • Two-piston disc brake, brake piston diameter: 24 mm
  • Price: 258.82 euros (RRP)
  • Weight per brake: 254 grams (manufacturer's specification, without discs or adapters)
  • Quantity available: 500 pieces worldwide
  • Carbon levers from Reynolds
  • Kevlar-reinforced brake line
  • DOT 5.1 brake fluid
  • Lever width adjustment, pressure point adjustment (with 2 mm Allen key)
  • Additional plain bearing for the piston
  • Lever bearing: Industrial ball bearing, sealed
  • Stable Rate Linkage (SRL) for constant lever ratio
  • Two-part fastening clamp
  • Two bleed openings on the brake calliper for even more blister-free operation
  • Brake calliper alignment via grub screws (crosshair alignment)
  • Semi-metal brake pads with aluminium backing plates as standard, sintered metal brake pads optional
  • D-Series brake disc available separately (160-203 millimetres, price: 58 euros)
D Series: The brake discs from Hayes are not the lightest because they are 1.9 millimetres thick - but they can withstand a lot.Photo: Hayes D Series: The brake discs from Hayes are not the lightest because they are 1.9 millimetres thick - but they can withstand a lot.

Sebastian Brust was born in 1979 and was originally socialised on his grandmother's folding bike, but has mainly been riding studded tyres since his fifth birthday. Loves all kinds of bikes - and merging with nature. Believes that disc brakes are much safer today than they were 15 years ago and thinks he has helped with his brake and pad tests. However, the trained vehicle technology engineer very much regrets that the bicycle industry is orientating itself on what he considers to be the wrong ideals of the car industry. At BIKE, he corrects, produces and organises digital content on the website.

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