Avid HSX Heat-Shedding Rotor (discontinued)

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3 member reviews

The Finest Rotor Avid EVER Made

Rating: Featured Member Review
The Good:

~160mm rotor is a scant 99g
~Titanium bolts are just 7g total
~ No noise
~ Powerful bite, at lever pull
~ Alloy rotor hub carrier is a one large heat sink
~ Thick, standard 2mm steel rotor surface
~ Perforated surface effectively sheds water and heat

The Bad:

~ Not cheap, but true QUALITY never is!

Overall Review:

After making hydraulic disc brakes for over a decade - Avid has finally collected all their years of research and race-inspired wisdom to produce what I call their finest rotor. The HSX is silent and stops on a dime. I realize there is lots of Avid hate out there....but this rotor simply does not warrant such product animosity.

Avid took an already fine-performing rotor(HS1) and increased its descending ability threefold. The new hub carrier acts as a huge heat sink and "floating" type rotor construction(ala' motorbikes) makes the disc stop with ruthless efficiency, under all conditions. End of story....

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The hub carrier does not act as a heat sink; at least not nearly as much as a single piece rotor. Though still connected the heat transfer will never be as good as on a rotor where the braking surface and carrier are a single piece. The real advantage of the floating rotor is that the rotor does not warp when it gets hot because its floating on the carrier, NOT that it provides better heatsinking. On a traditional one piece rotor, as the metal rotor heats up the carrier which is not as hot does not expand as much as the braking surface. So the length or the braking surface is expanding while the distance from spider arm to spider arm is expanding less causing the rotor to warp into a wave pattern. This warping in turn both creates noise and reduces braking power as the position of contact between the rotor and brake pads is altered by the wave pattern. In fact one of the reasons these rotors stay truer longer is both because the aluminum carrier is more resistant to bending from impacts but also because the carrier doesn't go through so many heat cycles.

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Much better than other Avid rotors

Rating:
The Good:

Light, stays true

The Bad:

None found

Overall Review:

I first used these rotors with my old Elixir 5 brakes about three years ago. I changed over from the regular Avid rotors you get for free with the brakes, to try to help eliminate that hideous 'turkey warble'. These rotors are infinitely better and went some way to eliminate the problems with the old Avid rotors. Since then I have moved these on to the back of two different bikes where they perform flawlessly with Shimano SLX 666 brakes. Three years, no pitting and still completely true, very impressed. I'll probably never buy Avid brakes again, but don't overlook these rotors foe AM, trail and XC duties, they seem better than the Shimano rotors.

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Not DH rotor

Rating:
The Good:

Lightenes and nice look.

The Bad:

Not specified for DH.

Overall Review:

Not specified for DH.

Specifications
Product Avid HSX Heat-Shedding Rotor
Material
Diameter
Disc Mount Type 6 Bolt
Weight N/A
Miscellaneous Utilizing cross-drilled technology, the lightweight HSX series ofrotors stays cooler when your race/ride heats up and offers enhancedwet-weather performance. Includes rotor bolts
Price $72
More Info
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