ASR Monster Mayhem


  • Reprint on popular demand
  • Four color deluxe screen print
  • Patented FLIP-TIP™ attachment system
  • Easy to mount, requires no tools
  • Suitable for tire widths between 23-35 mm

The Monster Mayhem design from our previous collaboration with MANDER is back! It sold out way too fast last time so we decided to bring it back in fresh new colors!

Martin Ander has created a name for himself as a unique artist with an eye for details. The style is deeply rooted in 70's comics, mashed up with graffiti and dark humor references. Martins work includes everything from underground club flyers to doctors dissertations. In recent years, his sharp pen has caused quite some international stir and some of his latest work features album covers for hiphop legend KRS-One and t-shirt prints for the synthesizer gurus at MOOG.

"We love the quirky details in his artworks and his precision in the selection of objects and contexts. There's always an extra layer of twisted hints that doesn't show at first sight. In our opinion it's the storytelling qualities that makes Martin a great illustrator and not only a perfectionist executor of style." Staffan Weigel, founder Ass Savers

"I have always had respect for companies that have an aesthetic thought with their products. After my first conversation with Ass Savers, I immediately understood that we will be able to create magic together. I am proud to present my work for the cycling world through Ass Savers mudguards." Martin Ander, illustrator

MANDER who? To find out more about the man/myth/legend, please check out our photo reportage from his studio.

For more info on the ASS SAVER Regular click here.


Technical data
Measures: 380x102 mm
Weight: 19 g
Material: 0.8 mm PP (Polypropylene)

Front rail attachment
Since 2014 all Ass Saver saddle mudguards attach to the front saddle rails only, ahead of the seat post attachment. The advantage with this solution is that saddles are more uniform in this area and we can therefore provide a proper fit to a much wider range of saddles. Attaching only to the front rails makes the mudguard self centering. If you accidentally kick it without noticing, it will strive to regain it's centered position. This is one of the key innovations in saddle mudguard technology and is therefore protected under patent No. WO2015036127

Using origami principles, the patent pending FLIP-TIP™ technology allows you to securely fasten the mudguard to the saddle with a simple flip of the tip, just like a cycling cap. To unlock, just flip the tip back down and pull backwards. Carbon rails The FLIP-TIP® technology is fully compatible with all types of carbon saddle rails.

Saddle bag compability
The new Ass Saver mudguard is a lot easier to install with a saddle bag than previous models. While we can't guarantee a perfect fit with all saddle bags, great improvements have been made with considerably less interference as a result.

The secret to transforming a flat piece of plastic into a functioning mudguard lies in the pre-folding prior to use. All the scoring lines have been carefully engineered to achieve locking mechanisms, self centering abilities, spring loading and material endurance. Please take the time to properly read the instructions/see the instruction video to ensure the best performance.


Customer Reviews

Based on 16 reviews

Was looking for a simple rear guard that done its job without being too bulky or ugly - the ASS SAVER looked perfect for what I wanted and I have not been disappointed. Relatively easy to fit on my particular saddle and does its job really well. Great value and service, would highly recommend.

Love it!

Really happy with it. Good coverage and a dry bum. Fitting it was a piece of cake even on my track bike with zero clearance.

Love it!


100 percent happy. It arrived quickly, it's exactly as described and VERY easy to install. :)


It's my second Ass Saver as I lost the first one
Finally a dry ass during those rainy Berlin summers!

does the job - well

Well, while in Richmond, VA we are experiencing the after math rains from the Texas hurricane HARVEY and the trails have some never drying muddy areas that you can’t avoid. First time putting the MUDDER to real use and it’s a life saver.