Hayes Dominion A4's

TommyF

Well-Known Member
Just put them on my Tallboy in place of SRAM Level 4 pots. The A4's are some serious brakes for sure, fantastic stopping power and feel. It's like the bite point of Shimano (you feel the pads hit the rotor in the lever throw) with the modulation of SRAM. Very sold set of brakes with fantastic stopping power using their semi-metallic pads. I wouldn't run their metal pads unless they were on a downhill specific bike. You get both in the set. Money well spent on a brake upgrade.
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Considering putting a pair on my Stumpjumper EVO to replace my Code R's. What's your long term experience with them, any bleeding issues, how was installation?
 
Fantastic brakes. I have them on my hardtail and they getting installed on my NJ bike when I'm back east. I took advantage of the Hayes "trade up" program through my LBS a few months ago. I handed them two old sets of Sram and got the new ones for just over dealer pricing. Super happy with them and the install was easy.
 
Considering putting a pair on my Stumpjumper EVO to replace my Code R's. What's your long term experience with them, any bleeding issues, how was installation?
The only installation issue on a Specialized is that the A4's use 5.5mm housing. It can be a tight squeeze thru the tube that's running in the frame. Rumor has it that Specialized didn't necessarily always use a tube that is large enough. Won't know till you try. Great brakes.
 
The only installation issue on a Specialized is that the A4's use 5.5mm housing. It can be a tight squeeze thru the tube that's running in the frame. Rumor has it that Specialized didn't necessarily always use a tube that is large enough. Won't know till you try. Great brakes.
I did read that the hose might be an issue but if the brakes are that good, I'm willing to deal with the hassle
 
Fantastic brakes. I have them on my hardtail and they getting installed on my NJ bike when I'm back east. I took advantage of the Hayes "trade up" program through my LBS a few months ago. I handed them two old sets of Sram and got the new ones for just over dealer pricing. Super happy with them and the install was easy.
Sounds good, thank you! What bike shop did you do this at and do you know if they still offer the trade up program?
 
I did read that the hose might be an issue but if the brakes are that good, I'm willing to deal with the hassle
The only issue I had was a new resonation issue on the rear causing a squeal. I put my old Sram adapter on instead of the Hayes and it went silent again.
 
The only issue I had was a new resonation issue on the rear causing a squeal. I put my old Sram adapter on instead of the Hayes and it went silent again.
I've got SRAM adapters front and rear due to the fact that I'm currently running 200 mm rotors. Does that mean I can reuse the SRAM mounts?
 
I've got SRAM adapters front and rear due to the fact that I'm currently running 200 mm rotors. Does that mean I can reuse the SRAM mounts?
If they're the ones like this, no problem. The alloy bracket type I believe will hit the caliper.

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I've got SRAM adapters front and rear due to the fact that I'm currently running 200 mm rotors. Does that mean I can reuse the SRAM mounts?
The body of the Hayes caliper sits lower than some other brands so you may not be able to use your current adapters. My Shimano 20mm ones wouldn't clear.

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Just a thought….just change the levers. Code r’s don’t have the rocker that gives the code rs and code rsc’s more leverage. On my Kenevo, I bought a pair of the code ultimate levers and the braking is great even when my 58lb bike… I bought these…


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$260 ish bucks and he will have much better brakes by just getting the levers. Cheapest a4’s I have seen were $200 per brake.
 
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