KTM 250 SX-F 2023 — Specifications

Ninety-nine kilograms on the scale dry, 45 horsepower unleashed by a 249.9 cc single-cylinder, a seat height of 950 mm that immediately puts the rider in attack position. The KTM 250 SX-F doesn't try to convince on paper — it makes its case on hard-packed dirt, in the noise and dust of motocross tracks. And on that precise terrain, few machines dare to go up against it.

What sets this engine apart from its direct rivals, the Yamaha YZ250F and the Honda CRF250R, is the density of its architecture. The DOHC four-valve-per-cylinder unit, with a bore of 78 mm and a stroke of 52.3 mm, displays a compression ratio of 14.4:1 that leaves no ambiguity about its intentions. Add to that titanium valves actuated by DLC-coated rocker arms to reduce friction, a 44 mm Keihin fuel injection system managed by an ECU that reads the engaged gear in real time, and you get an engine that responds with disconcerting directness at every twist of the throttle. The KTM 250 SX-F 2020 pulls hard, certainly, but it pulls with a readability that amateur riders will appreciate just as much as professionals.

The hydroformed chrome-molybdenum tubular frame works in direct synergy with the 48 mm inverted WP fork, adjustable over 310 mm of travel, and the rear WP monoshock at 300 mm. This fully adjustable suspension pairing — with high and low-speed compression adjustment at the rear, and 30-click compression and rebound at the front — places the bike in a class of its own in terms of setup precision. The single-piece pressure-cast swingarm allows wheelbase adjustments to suit different track configurations. The Brembo Wave discs, 260 mm at the front and 220 mm at the rear, complete a braking package that responds with precision without ever biting harshly.

The electronics of the KTM 250 SX-F 2020 deserve mention without condescension. The handlebar-mounted map selector allows switching between two power curves, activating traction control on wet sections, or engaging launch control from the gate — a feature reserved for Supercross machines just a few years ago. The Mitsuba electric starter, powered by a 2 Ah lithium-ion battery, has become indispensable in competition, and KTM has managed to integrate it without penalizing the overall weight. For those looking at a used KTM 250 SX-F or hesitating between model years, this electronic evolution represents a genuine argument over earlier versions.

The one point on which one can remain measured concerns the 7-liter tank, consistent for purely competitive use but limiting in the context of extended recreational riding. The 950 mm seat height also demands a suitable build, which clearly directs this model toward already experienced riders rather than beginners in search of their first motocross bike. Priced at €9,499, the KTM 250 SX-F positions itself at the top of the MX2 segment, on par with its premium Japanese competitors, but with a level of factory preparation that other brands don't offer without a second trip to the cashier.