Think “unbridled 2-stroke performance” and you’ll probably see a KTM 250 SX in your mind’s eye. For good reason too – there isn’t much to compare it to.
The 2025 KTM 250 SX takes that even further with a slew of fresh chassis enhancements, making it even more of a legend and one deserving of the record books.
Electric Start
Selectable Maps
Electronic Fuel Injection
Easy Suspension Adjustment
Pre-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
Picture 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 250 SX.
Thanks to a 12,8V 2 Ah lithium ion battery is placed under the rider’s seat, a high-quality stator and pickup and super robust design, the only thing you’ll be kicking – is ass.
Updated Suspension Settings
For 2025, the KTM SX and SX-F range has given the WP XACT AER fork and WP XACT rear shock an update.
This means you’ll be lining up at the starting gate with re-tuned settings, reduced weight, improved weight distribution, and an increase in overall response.
Electronic Fuel Injection
Pre-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.
Performance
The KTM 250 SX has always represented the very best of unsurpassed power and lightweight construction. The simplicity and low maintenance cost of the 2-stroke motor have made it a favorite amongst motocross riders for generations. For 2025, The KTM 250 SX enters the race paddock with an overall engine weight of only 52.6 lb (23.9 kg), setting the 250 SX engine as the benchmark in the highly competitive 250 cc class.
Selectable Maps
The 2025 KTM 250 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.
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All bikes subject to a £99 Prep Fee
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