As the hours keep climbing on the 2018 Yamaha YZ450F, I am enjoying the bike more and more. Engine-wise, the bike is still as powerful as the first time I rode it. One thing I overlooked is how easy it is to do regular maintenance on the bike. For example, changing the air filter is quick and simple. I used to dread coming home knowing I would have to change and clean the air filter. However, with Yamaha's new design, it is one of the easiest maintenance jobs on the bike. I was especially thankful for this after I fractured my wrist as I was able to change the filter with one hand. I only hand to deal with a quarter-turn tab screw by the top of the filter, two locking tabs holding it down, and a filter screw through the middle. The filter's flat surface also makes changing it a lot easier and takes a lot less time to clean.