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Item # FLB0004
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Formula Hardware & Rotor - 180mm $0.00
These are the superlight 180mm rotors for the R1 disc brake system. They are, however, compatible with all Formula disc brakes. At 109 grams, they represent a savings of some 20g or more over the stock Formula rotors, achieved largely through a new design using less material near the hub, and a drilling pattern that serves dual duty for weight savings and heat dissipation. They use the international standard 6-bolt design found on most wheels, though they can work with Centerlock provided you have the DT Swiss adapter.
Sizing rotors is a difficult call. Luckily, it is easy to swap rotors and move calipers. The easiest way to describe the difference is that the larger the rotor, the heavier duty the application. Shorthand is that 160mm rotors are for cross-country, 180 for all-mountain and some freeride, 200 for insane freeride and downhill. But riding style, braking style, and weight should also go into the equation.
Another thing we have found is that many believe they achieve better braking if they put a larger rotor on the front. We see many bikes with a 180mm front rotor and 160mm rear. It makes sense; most of your braking power is on the front wheel. If you think you're a cross-country type but are almost a Clydesdale, try a 180 in front and 160 in rear. Another time to try it is if you live in a region where you have many long descents. These are the 180mm rotors. Please choose the appropriate adaptor to fit your needs. 109g.
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Reviews & Community
Works great with Shimano XT.
I bought this rotor to upgrade the front end of my Rockhopper from 160mm. I also bought the Shimano XT Deore Dual Control setup to go with it and the whole thing is very sweet. I can now dive into a corner and shut down my 230lb butt as needed.