K&N powersports oil filters are TUV product endorsed and TUV factory production monitored. This means every K&N oil filter is equal to or will exceed all OEM specifications. K&N oil filters contain a modern synthetic filter media, designed for ultimate flow with less pressure drop, yet engineered for outstanding filtration to meet or exceed all OEM specifications. K&N powersports spin-on oil filters feature a heavy-duty metal can. Most of these have a 17mm nut affixed onto the end that allows for easy installation and removal. The 17mm nut is also crossed-drilled so the filter can be safety wired to the bike, which eliminates the possibility of it vibrating loose!