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Mucky Nutz Butt Fender Black
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Mucky Nutz
Butt Fender

Mfg PartNum:
  (3 customer reviews)
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Lightweight. Discreet. Effective.

The original mountain bike saddle guard - This clever rear mudguard is lightweight, discreet and requires no fasteners!


  • Improved design: thicker, stronger and re-profiled for a better fit.
  • Prevents 'soggy arse syndrome'.
  • Stops the top of your seat post from getting clogged up.
  • Discreet but very effective.
  • Weighs just 30g.
  • No fasteners required! Mucky Nutz simple, clever design is quick to fit and secure once in place.
  • Compatible with most standard double steel rail saddles that don't have any daft plastic moulded bits in the way.
  • Easy to clean as it's flexible and opens flat. Simply wipe it and you're done.
  • B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


    Coverage: Rear 


    Application: MTB 


    Mount Type: Clip-On 


    Wheel Size: Universal 


    Mfg PartNum: MN0028 

    Ordered by Most Relevant First
    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Easy install, great no-mud butt coverage.
    by mon
    Daily Commuter
    Portland US
    1 of 1 customers found this review helpful.

    Super easy, inexpensive and effective. Better than other types I have used. Flexes right back into shape after crash or other mishaps.

    Reviewed 4/23/2020
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    Dont waste your money-thicker stronger NOT
    by Anonymous

    If you are using this weak piece of plastic for mountain biking dont waste your money. Yes its lightwieght and should require fasteners. Its far from a guard.

    Reviewed 5/6/2021
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    Thank you for your feedback.
    Works great! Fits great on a 29er
    by Anonymous
    Cycling Enthusiast
    Evanston, IL
    1 of 1 customers found this review helpful.

    Easy to install!

    Reviewed 9/7/2020
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    Bicycle fenders for all types of bikes from commuter to road.