There are very few sounds that can’t be beaten.
The crack of a soda can on a blistering hot day. The ping of the perfectly executed golf shot.
And the scream of a 125 cc 2-stroke charging down a long straightaway.
The 2025 KTM 125 SX takes its leads directly from the Factory Racing team and puts them to work like nothing else.
Like the sound it makes, it cannot be beaten.
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 125 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.
With EFI comes great rideability. Along with the electronic fuel injection, a Power Valve has also been fitted to the KTM 125 SX, allowing for more usable power throughout the rev range.
Smoother power means better traction. Better traction means holeshot heaven!
The illustrated vehicles may vary in selected details from the production models and some illustrations feature optional equipment available at additional cost. All information concerning the scope of supply, appearance, services, dimensions and weights is non-binding and specified with the proviso that errors, for instance in printing, setting and/or typing, may occur; such information is subject to change without notice. Please note that model specifications may vary from country to country. In the case of coated surfaces, there may be color differences due to the usual process fluctuations. The consumption values stated refer to the roadworthy series condition of the vehicles at the time of factory delivery.
All bikes subject to a £99 Prep Fee
Finance available please ask for a bespoke quote