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KCNC Razor Disc Brake Rotor

Item #: BR243L00
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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
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by PowerReviews
KCNC BikeKCNC Razor Disc Brake Rotor

(based on 2 reviews)

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Reviewed by 2 customers

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Great for cyclocross.

By trail.biker

from Cincinnati OH

Verified Buyer


  • Lightweight


  • Wears Fast

Best Uses

    Comments about KCNC Bike KCNC Razor Disc Brake Rotor:

    The great think about this rotor is the rounded edges. Some cyclocross racers do not use disc brakes for fear of slicing themselves or their fellow competitors on sharp disc rotor edges. There is no danger of that happening with this rotor because the edges are rounded and smooth. I have them on my cross bike and I would have no problem with everyone else using them too. The light weight also makes them wonderful for fast riding on skinny tires. They do seem to wear faster than regular rotors, but at this price the weight savings are worth it. Buy them and shred.

    • Was this a gift?:
    • No

    (2 of 2 customers found this review helpful)


    KCNC Rotor Review

    By Brian

    from North Edwards, CA

    Verified Reviewer


    • Inexpensive
    • Light
    • Style


    • Vibration

    Best Uses

    • XCTrail

    Comments about KCNC Bike KCNC Razor Disc Brake Rotor:

    These rotors work just as good as any other super lightweight rotor that costs double or triple the price!

    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!

    • Was this a gift?:
    • No

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    Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.