The mucky nutz fat gut fender is a downtube guard designed specifically for your fat bike this gut fender will protect you from the waist upwards from any mud sand or snow thrown up at you from your front wheel when this downtube mucky nutz mudguard is used with the face fender the combination together will offer you unprecedented front end protection this downtube guard is one of if not the lightest tube guards around without compromising its performance simple and easy to attach to your