KTM 450 SX-F MY25

When you see the 2025 KTM 450 SX-F roll off the trailer, you know it means business. With 5 AMA 450 Supercross titles in the last 7 seasons, the 2025 KTM 450 SX-F rolls up to the starting gate already armed with the learnings of past championships – only this time, it’s freshly loaded with an all-new arsenal of weaponry.This motorcycle is designed, developed and produced in Austria.

At the core of this championship machine is a truly manic 4-stroke engine, weighing just 26.8 kg. This 449.9 cm SOHC unit is engineered to deliver incredible usable power, setting the benchmark for performance in the 450cc class. For 2025, the engine benefits from a new exhaust header with an improved joint for enhanced durability. An electric starter, powered by a robust 12.8V 2 Ah lithium-ion battery, ensures instant and reliable starts. The bike comes equipped with a map select switch, offering two distinct engine maps, plus additional electronic rider aids like Launch Control and an optional Quickshifter for lightning-fast, clutch-less upshifts.

The chassis receives significant updates for 2025, directly influenced by Factory Racing development. The central double-cradle-type 25CrMo4 steel frame features a reworked rear shock mount area and updated engine mounts with cut-outs, resulting in improved chassis flex, better cornering behavior, and a 300g weight saving. The WP XACT AER 48mm upside-down forks and WP XACT monoshock with linkage have been re-tuned for 2025, offering improved response and easy, tool-free adjustability for both high and low-speed compression, as well as rebound. Lightweight and strong black anodized D.I.D rims are fitted with race-tested Dunlop MX34 tyres, featuring new carcass and rubber compounds for improved damping, absorption, and enhanced traction. Braking is handled by powerful Brembo disc brakes, with a 260mm front and 220mm rear disc for exceptional stopping power. Ergonomically, new tank shrouds with bi-compound plastics improve radiator airflow and cooling, while a new fuel tank roll protects against scrubbing and enhances durability. An upgraded rear brake pedal adds stiffness and improved feel, completing a machine crafted for ultimate race performance and ready to dominate any starting gate.