2021 KTM 250 SX-F Troy Lee

2021 KTM 250 SX-F Troy Lee sits at the top of the quarter-liter motocross class as KTM's cosmetically upgraded, Troy Lee Designs-branded version of its factory-spec 250 SX-F racer. This is a purpose-built moto weapon, not a trail bike or a weekend plaything — the reed intake setup and high-revving 250 four-stroke platform reward riders who are already comfortable pinning a bike through whoops and off jump faces, not learning the basics. Ownership means regular top-end maintenance, a stiff WP suspension package that wants an aggressive rider to work properly, and a bike that feels most alive on a groomed track rather than a dual-sport loop. The 2021 model carried over without significant mechanical changes from the prior year — buyers comparing it to a 2020 example should focus on mileage, service history, and condition rather than spec differences. Production was limited, and the Troy Lee Designs edition adds cosmetic and cachet value over a standard SX-F without reaching true collector-grade rarity. Buyers tend to be intermediate-to-expert amateur racers or serious trackday riders stepping up from a 125 or downsizing from a 450, along with collectors drawn to the factory-team look who still plan to ride it hard.