The new 2025 KTM SX-E mini cross motorcycles aims to set a new industry standard for quality and performance. While the KTM SX-E 5 and KTM SX-E 3 offer hours of fun, learning, and early adrenaline rushes, they are far from mere toys. These models mark the beginning of a new era for the next generation of riders and racers.
Here are six key aspects in which KTM is leading the way with the 2025 SX-E lineup:
Drivetrain Development
The 2025 KTM SX-E 5 features a highly advanced, fully electric, water-cooled permanent magnet motor, delivering 30% more riding time compared to its predecessor, with a peak power of 5.0 kW. The motor is dustproof, waterproof, and maintenance-free, while the integrated control unit (ECU) ensures precise but controllable power delivery. It provides enough power for both thrilling rides and competitive racing, making it a high-quality alternative to traditional 50 cc petrol engines. The KTM SX-E 3, equipped with an air-cooled motor generating 3.8 kW, is ideal for smaller riders taking their first steps on small-wheel bikes. Both models feature a multifunctional display showing battery status and one of six ride maps that control the power output.
Frame Finesse & “Go as You Grow”
One of the standout features of the KTM SX-E models is their adjustable frame dimensions. The subframe, made of lightweight fiberglass-reinforced plastic, can be positioned to accommodate the growing junior rider, with a seat height range of 634-682 mm. Further adjustments can be made by lowering the forks in the triple clamps or changing the rear shock mounting position. The frame itself is forged from lightweight, high-strength chromium-molybdenum steel for agility and stability, with the 2025 update enhancing robustness and handling.
WP Suspension for a Factory Feel
Drawing from KTM’s adult bikes, the suspension on the KTM SX-E 5 is top-tier. A fully adjustable, upside-down 35 mm WP XACT air fork provides 205 mm of travel, with the air spring adjustable to the rider’s weight using a simple pump. The WP XACT shock absorber offers further flexibility with preload, rebound, and compression adjustments and provides 193 mm of travel. The KTM SX-E 3 features a non-adjustable upside-down 35 mm WP XACT fork with 144 mm of travel, still among the best in its class, and a shock that offers 129 mm of travel.
Battery Performance
The KTM SX-E 5’s battery consists of 84 modern lithium-ion cells encased in a robust die-cast aluminum frame, delivering 907 Wh of power. This setup offers two hours of casual riding or 30 minutes of intense racing. The KTM SX-E 3 is equipped with 60 cells for 648 Wh but can upgrade to the SX-E 5’s battery for extended riding time. Both models feature an advanced battery management system that optimizes battery life.
Charging Efficiency
The KTM SX-E 5 charges from 0 to 80% in just 45 minutes and reaches full capacity in 70 minutes, thanks to its 900 W external charger that works with 110- or 230-volt outlets. The KTM SX-E 3 charges from 0 to 20% in 20 minutes, 20 to 80% in 100 minutes, and fully charges in 140 minutes. Both models include safety features like a rollover sensor that cuts power in case of a fall and a wrist lanyard cut-off key. Additionally, ride modes can be locked with a dongle located under the seat.
Premium Parts and Performance
Both 2025 KTM SX-E models come with high-quality components, positioning them within KTM’s premier SX range. Strong aluminum alloy NEKEN handlebars taper from 28 mm to 18 mm, allowing the use of thinner, lock-on ODI grips specifically designed for electric bikes. Lightweight, black anodized aluminum rims (10” for the SX-E 3 and 12” for the SX-E 5) with MAXXIS MAXXCROSS-ST tires ensure excellent traction across various terrains. Hydraulic brake calipers and wavy discs on both bikes offer precise stopping power, with the SX-E 3 featuring a handlebar-mounted rear brake, while the SX-E 5 uses a foot-operated system. The in-mold graphics, bold orange livery, and factory-look frame complete the sleek design, delivering the unmistakable READY TO RACE feel.
