Yamaha YZ 125cc, 5 days

As a lightweight 207-pound (claimed) dirt bike, the 2020 Yamaha YZ125 presents itself as a nimble option for teens who are moving up in displacement and looking for a full-size motocross competition bike. Its aluminum frame, subframe, swingarm, and handlebar help keep weight down while the reed-valve-inducted two-stroke engine delivers 125cc of power throughout the rev range. It is race-ready with front and side number plates, fork guards, fully adjustable KYB suspension, and Dunlop knobbies.