Even with your top-of-the-line, super-expensive disc brakes, overheating causes fade and reduces braking power. The Avid HX1 Heat Shedding Rotor is here to put an end to the madness. Not only does Avid's new cross-drilled braking surface dissipate heat quickly, it also eliminates the loud squeaking that has made some brakes famous (or notorious). Because alloy conducts heat more efficiently, the alloy carrier on this two-piece rotor allows heat to dissipate more quickly and resists fade better than similar one-piece designs.The Avid HSX Heat Shedding Rotor is the next step in disc brake technology. The two-piece stainless steel and alloy design utilizes cross-drilled technology for significant weight savings without compromising durability. The new design promotes heat regulation, and weighs around ten grams less than previous models. The cross-drilling also sheds water quickly, resulting in increased stopping power in wet weather. The Avid HSX Heat Shedding Rotor is available in 160mm, 180mm and 200mm size. It uses the IS 6-bolt mounting pattern.
I have bought those because I changes wheels to centerlock. Those rotors are a joke. I got them in original avid box and when I unboxed them that where untrue. Not a little bit but untrue to a level that that required truing. Now I'm using them for a month and about 200km and that are almost gone... I have never seen rotors wear this fast ! My last rotors (also avid) have almost no signs of war after 3 years of use in a heavy AM. The next thing is they make lots of noise when they overhead and they overhead fast. I think that is is one of the worst MTB products that I have came across in like 15 years of rings. On top of this all they are pricey. I'm going to shimano. Avid if you read this you should send me a new pair of rotors because this is not a product that can be used in MTB.
a All Mountain Rider
Date Reviewed: May 10, 2012
Strengths: Lowers the number of parts for Avid X0 brake assembly on Shimano wheels and help respect the warranty. Lighter then an adaptor with a HS1 brake.
Weaknesses: From the box the discs are wavy. Some cross drilled holes not done properly. The worst is that the aluminium carrier is at least 1 mm too inboard. When it's time to adjust the calipers, mine couldn't go inboard enough to make sure that the inner pad doesn't touch the disc. Previously I had HS1 rotors with DT Swiss adaptor. That setup had the tendancy to loose itself but the alignment was fine.
Hope that Avid will correct that issue because they don't worth a penny. The idea is good but the result is far from what I would expect.