Ass Savers Win Wing

Tell us what the product is for and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

It's a mini-mudguard that has its own mount and does a very good job of keeping your bum dry.

Ass Savers says:

Full backside rider protection from the knee and up

Patent pending Wishbone attachment system

Attaches in seconds to every bike, requires no tools

Ultra-lightweight at 64grams

Suitable for tire widths up to 38mm

We have yet again rewritten the rules of fender design with our new, ultra-lightweight, clip-on performance mudguard – the radical Win Wing.

The Win Wing Road fits practically any skinny tire bike, protecting the rider in even the worst conditions. Ideal for winter training or if you want to add some comfort to your puristic urban ride. The Win Wing won't rattle or jam, and with only 64g, you won't even notice it's there.

Based on the principal of Tangential Coverage, the Win Wing catches the spray by shielding the upper rear quarter of the wheel, protecting your critical areas (thighs, butt and back) and drastically increasing your comfort. And when comfort can be had without a weight penalty, that's what we like to call a 'win-wing situation'.

Tell us some more about the technical aspects of the product?

Ass Savers has several times more words of tech info about the Win Wing than there are grams of material in one!

Technical data

Measures: 375x85mm

Weight: 64g

Material: Blade - 0.9mm PP (Polypropylene), Wishbone holder - glassfiber reinforced PA (Polyamid or Nylon) and Strap - TPU (thermoplastic polyurethane).

Tangential Coverage

The key to understanding how the Win Wing works lies in physics: water and mud leave the wheel in a straight line from the tangential point of release. By shielding only the upper rear quarter of the wheel, the Win Wing eliminates spray from reaching the critical areas of the rider with a minimum of material.

Mount right, mount tight

For the Tangential Coverage to work properly, the mudguard needs to be installed very close to the wheel. Aim for 5-10 mm tire clearance for maximum coverage.

The right angle

Just as important as a tight fit is the angle of the blade. There are three different settings to compensate for the angle of your seat stays. Choose the one that allow a horizontal or a tail-up position. Avoid a tail-down angle as this will reduce the efficiency of the fender.

Strap it hard

The straps are made from ultra-tough TPU and should be pulled as tight as you can comfortably do by hand. If you experience that the mudguard is not stable, try to use the next hole in the strap.

Anti-Jam

As sturdy as it is, the design of the Win-wing allows it to flex in case of an accident and it's constructed to not jam in case of large chunks of nature get stuck to your wheel.

Anti-Theft

If you like to keep it attached to your bike permanently, the Win-Wing can be secured to your bike with a standard zip tie, through a designated slot, making it easier to resist for people with sticky fingers.

Reliable

Thanks to its sophisticated simplicity and careful choice of materials, the Win-Wing is virtually indestructible. With only four components (competitors use as much as 40 components) it's not that much that can go wrong. The glassfiber reinforced wishbone holder is both flexible and tough and the rubber straps are virtually indestructible.

Pre-folding

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.

Sustainability

The black blade is made from 80% recycled PP and the Win Wing has been designed for efficient shipping and easy recycling. Each component can be purchased separately, making repairing and upgrading convenient. The Win-Wing is 100% Made in Sweden in ISO 14001 certified factories.

Everything's tidily moulded and pressed.

It keeps your bum dry. Nuff said.

It's early days, but the wishbone, straps and blades all resisted a bit of simulated abuse.

64g is bugger all.

It's worth £22 for such a simple and effective way to keep your bum dry, but that price is a bit higher than most of the competition.

Tell us how the product performed overall when used for its designed purpose

Very, very well.

Tell us what you particularly liked about the product

Ease of fitting, stability, keeping my bum dry.

Tell us what you particularly disliked about the product

Nothing.

How does the price compare to that of similar products in the market, including ones recently tested on road.cc?

There are loads of rear mini-mudguards out there, costing from just £6 for the Zefal Shield Lite M. The best of them include the Zefal Swan at £12, and the SKS X-Blade at £25. There have been loads of others that we've liked over the years but this is a product category where being good seems to be no guarantee of longevity.

Use this box to explain your overall score

This is an excellent mini-mudguard and pretty much the only thing stopping it getting 10/10 is that it's £22 instead of, say, £15.