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  1. #1
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    Rotor upgrade for HD

    I have a stock X9 HD with 160/180 Rotors and Formula RC brakes. Stopping power is not so good. Thinking that bigger rotors might be the cheapest fix. From my understanding, I can move the 180 rotors and its adaptor back and then all I need to do is buy a 205 rotors and the corresponding adaptor for the front. Sound right?

    If anyone happens to have product numbers for the things I need, that would be great. Otherwise, I'm sure I can take the extra five minutes to figure it out myself....

  2. #2
    HJH
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    Yes, you can move rotor and adaptor from fromt to rear. Then buy proper rotor and adaptor to front.

    I don't think this will solve the problem. I'm running with 180/160 mm rotors and I have plenty of braking power. Might say too much. Maybe you should check pads first if they are not OK...

  3. #3
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    check your pads, I have The Ones 180/180 and the power is very good. Occaisionally not and it tends to be glazed pads.

  4. #4
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    I didn't like the stock formula brakes at all.

    Went with the Shimano XT785 and Icetech rotors, I'm way happier.

  5. #5
    Cumbria, England.
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    OP - If they've got the original organic pads, change them to sintered...I was much happier with my R1's when I did this.
    - The seasons blow away, but the love is just the same -

  6. #6
    www.derbyrims.com
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    Bigger rotors will add power and reduce or eliminate fade from heat, but they are heavier.

    As suggested, if not using "sintered" type semi-metalic pads, try that first. Clean your rotors with rubbing alcohol before swapping pad material, or brands, give them a few rides to break in if noisy. Organic pads are usually quieter.

    Your Formula calipers are plenty.

    And yes, the fork post-mount adapter for a larger rotor from the fork can be used for the same rotor size in the rear.

  7. #7
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    I'm not too worried about heavier rotors. Sounds like they'll make me stronger. However, I will try cleaning my rotors and potentially changing pads, first. Thanks for the advice.

    I took a ride on my buddy's carbon nomad the other day and found his brakes to be AMAZING in comparison to mine. He has XTs. So i didn't mind mine until I knew what I was missing....

  8. #8
    Ride or Die!
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    Quote Originally Posted by circlesuponcircles View Post
    I'm not too worried about heavier rotors. Sounds like they'll make me stronger. However, I will try cleaning my rotors and potentially changing pads, first. Thanks for the advice.

    I took a ride on my buddy's carbon nomad the other day and found his brakes to be AMAZING in comparison to mine. He has XTs. So i didn't mind mine until I knew what I was missing....
    I switched from Magura Martas to the new XT's on my HD. The XT's are amazing brakes and the price is right too.

  9. #9
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  10. #10
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    Quote Originally Posted by circlesuponcircles View Post
    I'm not too worried about heavier rotors. Sounds like they'll make me stronger. However, I will try cleaning my rotors and potentially changing pads, first. Thanks for the advice.

    I took a ride on my buddy's carbon nomad the other day and found his brakes to be AMAZING in comparison to mine. He has XTs. So i didn't mind mine until I knew what I was missing....
    They have been on sale a lot lately, picked mine up for $120 a wheel.

  11. #11
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    The new XT are amazing

  12. #12
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    Quote Originally Posted by circlesuponcircles View Post
    I have a stock X9 HD with 160/180 Rotors and Formula RC brakes. Stopping power is not so good. Thinking that bigger rotors might be the cheapest fix. From my understanding, I can move the 180 rotors and its adaptor back and then all I need to do is buy a 205 rotors and the corresponding adaptor for the front. Sound right?

    If anyone happens to have product numbers for the things I need, that would be great. Otherwise, I'm sure I can take the extra five minutes to figure it out myself....
    I did the rotor upgrade then switched back to the 180/160. So I have the necessary 200 rotor, adapter and rear adapter laying around if you'd like to buy them.

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