Shopping Cart

Your cart is empty.

Your cart is empty.

Mucky Nutz Butt Fender

Free shipping on orders over $29.99

$15.92

$ 6 .99 $6.99

In Stock

1.Color:White


  • Improved design: thicker, stronger and re-profiled for a better fit
  • Prevents 'soggy arse syndrome' And the top of your seat post from getting clogged up
  • No fasteners required. Our 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
  • Designed, developed and manufactured in the UK



From the manufacturer

Mucky Nutz, Butt Fender - Reflective. The original lightweight saddle guard!

BF Reflective

Lightweight. Discreet. Effective.

The original cycling saddle guard - This clever design is lightweight, discreet and requires no fasteners!

  • Helps to prevent the dreaded 'soggy arse syndrome' whilst cycling in wet conditions.
  • Stops the top of your seat post from getting clogged up with mud.
  • Super lightweight, at just 30g!
  • Discreet, but very effective.
  • No fasteners required! Our simple, clever design is quick to fit and secure once in place.
  • Compatible with most standard double steel rail saddles.
  • Easy to clean as it's flexible and opens flat. Simply wipe it and you're done!
  • Suitable for road cycling, commuter and mountain biking (hardtail and full suspension).
  • Compatible with dropper seat posts.
  • Designed and manufactured in the UK.
bf reflective

Grey by day - bright by night!

The reflective colourway comes alive under torchlight, enhancing your viability to others in the dark. It also looks cool AF!

Perfect for anyone who cycles on the road, particularly in the winter months!

bf

Grey by day...

The reflective ink is a cool, subtle grey in the daylight.

bf

Bright by night!

The fender shines bright in the dark when shone over by torchlight. This greatly enhances your visibility to others when cycling on the road.

bf

Simply clips into the saddle rails...

The simple design requires no fasteners for fitting. It simply clips into the saddle rails and can be used with a rear light bracket installed (as pictured).


Abigail Fry
2025-09-03 15:04:23
This was too easy. It does a great job covering the normal "splash" zone and I really like the height, so there is no chance it can interfere with the tire.
BB
2025-08-19 13:27:12
For not having any zip ties or tape to hold it in place, it's really sturdy. It doesn't even move when I'm driving down the highway at 75 mph for 15 miles with the bike on the bike rack. Love it!
Solipsist in a Cloud
2025-07-25 19:56:15
It is a bit fiddly to get it in place, but once in it stays stable in place. The wide area provides sufficient coverage to protect the butt from the distinguishing brown marking fenderless cyclist have on rainy days.There is still enough space to mount a saddle bag underneath the fender, but you have to remove the saddle connector. This makes this fender a more permanently mounted solution and not something you stick on quickly before you head out.
JohnVolkmann
2025-07-20 13:19:27
Great for the price. Temp use only. Could be more sturdy.
Justin Harris
2025-07-02 18:44:41
I had the old version of this and it worked pretty well. The only complaint I had was that it was a little floppy and with the seat dropped it would hit the tire on hard landings, but it never folded under the tire. The new version supposedly added some rigidity and a little flap to help keep it from hitting the tire or getting stuck on it. They also stated they added a tab to make it easier to install. Neither worked. It was way harder to install than the old one. The first mild bump I hit with the seat dropped it got stuck and folded under the tire. Had to stop and pull it out and then it did the same thing next bump. It's completely unusable. Very disappointed and sending it back.
brian reviews1
2025-06-29 11:24:51
I had 2 others I purchased a few years ago the lasted well. This one broke as soon as I installed it.
Ron
2025-06-11 16:01:21
Did NOT fit under my bike seat in the least bit. Unable to use it at all...
Sean
2025-04-04 17:27:16
So far so good. It's discrete and looks good.Update:Does not do well on bikes that have a large distance between the seat and the wheel... May as well not have a fender.
辛口
2025-02-21 10:56:23
のでこちらに。シートから薄く伸びた状態なので人目線だと長いシートの延長のようにも見えたり。こちらのほうがスマートに見えます(個人的に)
Günni
2025-02-16 12:09:35
Quality
troxler marc
2024-12-31 13:34:09
Pas aussi abouti que les autres garde boue de la marque. A tendance à tourner.
Marco
2024-11-23 11:15:03
Leggerissimo e robusto. Solo un pochino macchinoso da mettere su selle racing.