Really enjoyed installing Hayes A2 and bleeding with 2 ports on caliper

[JaketheSnake]

They were on sale at $125 per side, buddy got email from mtbr.com best deals, now they back at $249 per side

Dual Bleeding ports in the calipers makes bleeding a breze!

Smart caliper centering bolts

 

[Sasquatch9billion]

I don’t think I’ve tried a pair of Hayes since I had them on my ‘08 Dawg Deluxe.

 

[Mikie]

They were on sale at $125 per side, buddy got email from mtbr.com best deals, now they back at $249 per side

View attachment 94559


Dual Bleeding ports in the calipers makes bleeding a breze!


View attachment 94557


Smart caliper centering bolts

View attachment 94558

I’m liking that centering bolt idea! I do hope that catches on.

I still really n single piston front and rear. I never really felt I needed more than that. Definitely interested to hear your take on the dual.

 

[JaketheSnake]

I’m liking that centering bolt idea! I do hope that catches on.

I still really n single piston front and rear. I never really felt I needed more than that. Definitely interested to hear your take on the dual.

These A2 are dual piston brakes, the T4 and A4 are 4 piston. They are very powerful and very easy to bleed!

 

[Mikie]

Thanks,
I was just reading up on them and thought the A2 meant dual piston. Then I saw the A4’s.
Very interested to know what your performance review will be.

Thanks for posting this up.

 

[AKAKTM]

I read a detailed brake test of 4-pot 'enduro' brakes in an EU magazine recently and the Hayes won--handily. Beat the XTR, Mavens, Magura and TRP.

 

[JaketheSnake]

Thanks,
I was just reading up on them and thought the A2 meant dual piston. Then I saw the A4’s.
Very interested to know what your performance review will be.

Thanks for posting this up.

A2 are dual piston.. How can you have a brake caliper with only one piston? It would have only 1 brakepad.

 

[AKAKTM]

A2 are dual piston.. How can you have a brake caliper with only one piston? It would have only 1 brakepad.

Lots of cars and motorcycles have only one piston and two pads. I am not aware of anything like that on bikes.

 

[Mikie]

I can see where the dual piston talk can be confusing.
I say single piston to mean the traditional brake. Having a piston on each side pushing a brake pad. I say dual piston to mean there are four pistons, two on each side pushing a larger brake pad.

I can lock my Shimano XT single piston brakes (1 piston on each side ) with minimum single finger pull effort, so I still see no benefit to a 4 piston caliper other then possibly less heat? Maybe slower wearing pads due to volume?

I have learned to be more open minded on new product, but I want to sift through the fads to stick with function over fashion.

 

[Lost Kiwi]

Lots of cars and motorcycles have only one piston and two pads. I am not aware of anything like that on bikes.

You could argue that SRAM BB7 are single piston, the inside is fixed and only the outside actually moves.

 

[DangerDirtyD]

I can lock my Shimano XT single piston brakes (1 piston on each side ) with minimum single finger pull effort, so I still see no benefit to a 4 piston caliper other then possibly less heat? Maybe slower wearing pads due to volume?

The Rekons may be overwhelmed when combined with 4-piston calipers.

 

[Mikie]

The Rekons may be overwhelmed when combined with 4-piston calipers.

Skids are for kids…
Controlled braking by skilled cyclist is the key.

 

[DangerDirtyD]

Skids are for kids…
Controlled braking by skilled cyclist is the key.

Of course, until you encounter prominent topography. Then the main focus is keeping the front tire from locking up.