Bicycle fender

On a bicycle, a fender American English or mudguard British English is a part that encloses a tire so that it stops spray of water, sand, mud, stones and other road debris from thrown into the air by the rotating wheel.

[1] Full-covering fenders[2] go over most of the upper side of the tire, and are considered standard equipment on utility bikes.

Fenders (mudguards) have an additional cost and contributes to extra weight on the bike, but have the benefits of keeping the cyclist's legs, trousers and back drier, as well as preventing paint damage,[4][5] preventing eye damage to passengers in bicycle trailers,[6] and being able to provide lower aerodynamic drag.

[7][8] The spray can be clearly noticed when cycling behind another rider in wet conditions, such as when cycling in pelotons, and some clubs require the use of a rear fenders when training in the winter.

There are no standards for fenders, but there are adjustable models on the market that can be adapted to fit several bikes.