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KCNC Razor Disc Brake Rotor

Item #: BR243L00
USD$24.99
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KCNC Razor Disc Brake Rotor

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
3.8 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
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KCNC Rotor Review
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!

PROS: Light, Style, Inexpensive

CONS: Vibration
March 17, 2013
Location:
Fort Worth Texas
Great for cyclocross.
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.

PROS: Lightweight

CONS: Wears Fast
July 26, 2013
Location:
Cincinnati, OH
Perfect stopping !!!!!!
Best delivery to PR.Thank's
August 14, 2014
Location:
Fajardo, PR
Great product
Delivered on time and ins in perfect shape. Rotors are always scary to ship, but these came to me perfect.
June 6, 2016
Location:
Albuquerque, NM
Great Rotor
Fast shipping on a great rotor.
June 1, 2016
Location:
Green Bay, WI
Everyone should own a set!
Also with fast shipping!
May 9, 2016
Location:
Hickory, NC
stop on a dime
used these with some new XT brakes. amazing!
November 3, 2016
Location:
Front Range, Colorado
They look nice but fall flat...
Bought these to throw on a super lightweight rigid singlespeed build. Had a hell of a time getting a set of XT M8000 calipers to center on them. Never did get the front 180 to stop rubbing.

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.
User submitted image
Added May 19, 2017
May 19, 2017
Purchased
3 weeks ago
Location:
Santa Clarita, CA
Not a good match for my brakes!
Dlivery and service consistent as usual. Shipped out within one business day plus about 5 days transit from CA to NC.
November 6, 2016
Location:
Charlotte, NC
Not for Road Disc.
Worked just fine until I had to stop on a hill doing 45mph. Brake went to the bar and the rotors over-heated. going back to one with an alloy insert. I weigh 220 fwiw.
July 20, 2016
Location:
SLC, Utah

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Get free shipping with your $50 purchase today when you choose Standard Shipping at checkout. 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

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Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

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.