2025 KTM 300 SX
The numbers
Where the price sits
A comparable set is anchored on this machine's odometer, and this listing does not publish one. There may well be machines like it on the board — there is just no way to line this one up against them. The ask is shown on its own instead.
A comparable is the same make, model, year and trim, within 3,999 miles of this odometer and 500 miles of this dealer. Unpriced listings are ignored, this one is excluded, and a dealer posting the same machine twice counts once.
Who is selling it
What they say about it
2025 KTM 300 SXWhen it comes to power-to-weight ratios, the KTM 300 SX writes the rule book. Now with learnings taken directly from the KTM Factory Racing teams, and a care package labeled "Go get 'em!", the 2025 KTM 300 SX is engineered for one task alone - to lead from the front.Features may include:BEFORE THE GATECLICK INTO ACTIONEasy Suspension AdjustmentAs always, the suspension boasts an easy tool-free setup at both ends, ensuring you chase down the podium in total control. On the rear, a hand-adjustable dual compression control allows riders to adjust high- and low-speed settings in a matter of seconds. The forks on the front end are also easily adjusted thanks to hand-adjustable clickers on the bottom of the fork shoe and top cap.NO JETS - ONLY ROCKET SHIPSElectronic Fuel InjectionPre-mix gets a remix across the 2-stroke KTM SX range, with Electronic Fuel Injection setting the standard. Now there's no more fiddly jetting setup pre-race, And thanks to the Keihin EFI and reed valve case design, you can be guaranteed of laying down optimal power at any altitude, all of the time. CHUGGA CHUGGA, RING DING DING!Electric StartPicture this; You're 7 laps into an absolute ripper of a race. You miss your line and end up stalling in a deep rut. But you don't sweat it. All you do is press the starter button and you blast off again to take the final flag. This is the reality on the 2025 KTM 300 SX. Thanks to a 12,8V 2 Ah lithium ion battery is placed under the rider's seat, a high-quality stator & pickup and super robust design, the only thing you'll be kicking - is ass. START STRONGSMOOTHER POWER DELIVERYEFI + Power ValveWith EFI comes great rideability. Along with the electronic fuel injection and a power valve on the KTM 300 SX, allowing for more usable power throughout the rev range. Smoother power means better traction. Better traction means holeshot heaven!UNMATCHED PERFORMANCEPerformanceThe new 300 cc 2-stroke powerhouse brings a new choice of weapon into the MX Open category and provides more choice for racers looking for maximum power at the least possible weight. Along with low maintenance costs, an overall engine weight of just 23,9 kg, the 2025 KTM 300 SX provides pure performance. And then some. PICK YOUR POWERSelectable MapsThe 2025 KTM 300 SX features a map select switch allowing the racer to switch between 2 engine maps. Map 1 provides a linear, predictable power delivery, while Map 2 gives it the full beans with crisp, explosive power output. CALM UNDER FIRESLEEKER FOR YOU TO SCRUB CLEANERAbsolute ControlGet ready for a full-on berm assault. The 2025 KTM SX and SX-F machines have received major frame updates directly from Factory Racing efforts. For starters, the frame area around the rear shock mount has been updated and made more streamlined, with new engine mounts and cut-outs for improved chassis flex. The front area of the frame is also updated. with a different wall thickness than the previous model year, with renewed engine mounts. This adds up to a 300g weight saving and improved flex for better cornering. FLUID RIDER MOTIONErgonomicsUpgraded tank shrouds using bi-compound plastics channel air towards the radiators more efficiently, while a new fuel tank roll, makes for a tighter, more secure fitment, reducing the chance of frame scrubbing and dramatically improving durability. All this works alongside the specially-developed rider triangle, to provide unmatched knee contact and gripping surfaces - especially when standing on the pegs.