KCNC Bikes make high quality bicycle components that embody both form and function. The Razor rotor is made of stainless steel and is built to be strong. the large cut-aways allow heat to dissipate quickly so braking is always reliable.
- 6 bolt design
The open design does take some getting used to until pads bed in. If your someone who wants to keep weight and price down on your bike and doesn't tend to grab a handful of brake at every corner then these will serve you well.
I used a 180mm rotor for front and 160 for rear on my XO trail brakes / Pivot Mach 5.7 without issue over the last 100+ miles of riding.
New out of the package, I did have to slighlty tweek the front rotor a hair to avoid rubbing, but 160 was perfectly true. Keep in mind all open rotors like this will easily come out of true with less material stiffness, which is why my best use opinion is XC/Trail use.
Thus, if you tend to be on the brakes alot, I'd recommend a more closed designed rotor like the Avid HS1's or Shimano equivalent for your type manufacturer brakeset.
Overall, very pleased for my intended use and price. They even come with rotor bolts.
Lastly, the weights are etched on the rotors.
(180 = 94gms) (160 = 73gms)
Hope this helped.
Jenson Customer for Life!
PROS: Light, Style, Inexpensive
CONS: Wears Fast
As far a stopping power goes they fall flat. My suspicions lie in the open design of the friction surface. Switched to a set of XT rotors. Greater stopping power and they center right away. Shimano rotors are worth the extra weight.
9 months ago
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