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  1. #1
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    Best Fat Bike Brakes & Rotor Size

    So I recently did a long shuttle ride over 2.5 hours downhill on my fat bike and my Shimano Deore brakes just weren't cutting it. I have 180mm rotors and usually they work just fine, but by the end of this ride they were squeaking and I lost a lot of my stopping power.

    Thinking of replacing them with some Hope Tech 3 E4 Brakes. From the reviews I have read they seem to be pretty awesome though more expensive than most, Any one have experience with these or any other brakes that work well stopping the massive wheels that we use? I figure with the extra weight of our wheels and tires we may need some all mountain type brakes to do the job well enough. Any opinions would be appreciated.

  2. #2
    This place needs an enema
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    Unless you plan to do that ride every day and ride nothing else, I'd get new pads and new, larger rotors for your current brakes. No reason they can't work just fine. Be sure to bed them in properly to start.

  3. #3
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    If you have not asked this question in "Brake Time" you may want to.

    I am not expert but I would go one step at a time:
    1.) New pads (semi metallic)
    2.) Larger rotors
    3.) Look at new calipers

  4. #4
    Rhymes with fartmaster
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    “Best” is a personal preference, however, having ridden ONLY Avid BB7 mechanicals since 2009/2010 (160/160 and 180/160 setup F/R), I recently upgraded to TRP Spyke (mechanical yet two-piston actuation) 180/180 (F/R) with TRP 180mm rotors and I swear this is the missing link – dual-piston actuation, and no mineral oil or brake fluid to boil. I am contemplating upgrading to a 200mm rotor in front to see how much more awesomer it might be, as my current fatbike is set up for rather aggressive trail riding (slacker front end thanks to 120mm Bluto fork on a frame designed for non-suspension-corrected rigid fork, coupled with 35mm stem and 780mm bar, and so I could possibly benefit from a larger rotor up there.
    one by nine works just fine but single speed is all ya need

  5. #5
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    Quote Originally Posted by Fattyrider38 View Post
    Any one have experience with these or any other brakes that work well stopping the massive wheels that we use?
    I have Zees with 180/160 RT81s
    Best Fat Bike Brakes & Rotor Size-f.jpg Best Fat Bike Brakes & Rotor Size-r.jpg

    The bike isn't that heavy but 4 piston brakes + 4.8" rubber offers a braking experience like no other. Proper brick wall effect as in 'I've just run into a...'

    Quote Originally Posted by Fattyrider38 View Post
    Thinking of replacing them with some Hope Tech 3 E4 Brakes
    Hmm I have some E4s as well and they are pretty good but different to the Zees. The Hopes have a meatier lever pull, and compared to the Zees they have less bite - some might say less grab - but once you're used to it they're just as effective. The Zees are good for comfort braking and kind of steadying the ship whereas the Hopes are a bit wooden at very small lever movements. In terms of absolute power they're identical but the Hope's heavier pull does get a bit distracting on long descents. Personally I like them both. The Zees are basically Deore levers and Saint calipers with less expensive fittings whereas the Hopes are superbly machined and generally nicer to look at. Functionally I prefer the Zees but the Hopes are more bling

  6. #6
    All fat, all the time.
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    Hope V2 and 203 rotor.

  7. #7
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    Obvious lowest cost option to the problem is to put 203s on your front and leave the back at 180.

    I have 203s on the front of all my bikes, mostly because of the spare parts I have laying around from running DH rigs. The stopping difference is noticeable regardless of what brakes I'm using.

    ....that said, any excuse needed to buy some Hope Tech bling is legitimate in my opinion.

  8. #8
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    I've replaced the Shimano Deores on my 2017 Fatboy Comp Carbon with TRP Slate 4 calipers. Four piston, differentially sized, on 180/160 rotors. Superb feel and control, amazing stopping power. I'm a big guy (255 lbs) and I ride mostly on the street where you get high traction. I can be pounding down a hill at maximum warp (28 mph) and stop for a sudden obstruction almost instantaneously, yet I can feather the brakes at a walking pace in my bottommost gear with exquisite precision and delicacy.

    Can't say enough about them ... they're just great brakes! They're better than any others I've tested.

    G

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