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KTM 300 EXC HARDENDURO

Make Model	KTM 300 EXC Hardenduro
Year	2025
Engine	Two stroke, Two stroke, single cylinder, with reed intake and exhaust control
Capacity	293.2 cc / 17.9 cu-in
Bore x Stroke	72 x 72 mm
Lubrication	Electronically Regulated Oil Pump
Cooling System	Liquid cooled
Induction	Keihin EFI, 39 mm throttle body
Ignition	Vitesco Technologies EMS
Starting	Electric
Clutch	Wet, DDS multi-disc clutch, Brembo hydraulics
Transmission	6 Speed
Primary Drive	26:72
Secondary Gear Ratio	14:45
Final Drive	X-Ring 520
Frame	Central double-cradle-type 25CrMo4 steel
Front Suspension	48 mm WP XACT-USD
Front Wheel Travel	300 mm / 11.8 in
Rear Suspension	WP XPLOR Monoshock with PDS, Aluminium-reinforced polyamide
Rear Wheel Travel	310 mm / 12.2 in
Front Brakes	Single 260 mm disc, 2 piston caliper
Rear Brakes	Single 220 mm disc, 1 piston caliper
Front Wheel	21 x 1.6 in
Rear Wheel	19 x 2.15 in
Front Tyre	90/90-21
Rear Tyre	140/80-18
Steering Head Angle	63.9^°
Wheelbase	1489 mm / 58.6 in
Ground Clearance	347 mm / 13.7 in
Seat Height	963 mm / 37.9 in
Weight without fuel	106.3 kg / 234.4 lbs
Fuel Capacity	9 Litres / 2.4 US gal

From a press release by KTM:

The 2025 KTM 300 EXC HARDENDURO draws inspiration from races bearing its name and stands as a testament to conquering the toughest enduro competitions worldwide.

Since its launch in 2024, the KTM 300 EXC HARDENDURO has become the premier model in the KTM Enduro lineup, achieving the top position in the 2025 range and available directly from dealerships.

Having already clinched victories in the first two rounds of the 2024 FIM Hard Enduro World Championship and achieved three consecutive wins at the Red Bull Erzbergrodeo with Manuel Lettenbichler at the helm, the KTM 300 EXC stands as a formidable competitor. Through his and other pro-racer feedback, the 2025 KTM 300 EXC HARDENDURO is engineered to provide the ultimate READY TO RACE Enduro package.

The new standout technical feature of the 48 mm WP XACT closed-cartridge spring fork on the 2025 KTM 300 EXC HARDENDURO is the innovative adjustment of the base valve preload, which mirrors the design of our high-end aftermarket pro components. Adjusting the spring preload on the base valve significantly impacts and offers a broader range of adjustments.

The base valve preload adjusters enable seamless, on-the-fly adjustments by hand, with a total travel distance of 4 mm—a minor change that produces substantial effects.

For the rider, this translates to quick and effortless fork setup modifications: increasing preload for improved stability on fast enduro tracks or decreasing it for enhanced comfort in technical riverbeds. This adjustment impacts almost the entire stroke of the fork, and now it translates to full adjustable suspension, both front and rear.

Additionally, upgrades have been made to the rear shock settings, chain glider, and fuel tank roll.

However, as its nameplate suggests, the HARDENDURO is built to tackle the toughest terrain, featuring a collection of select and purposeful options over the standard KTM 300 EXC.

These include various protection parts, along with several signature HARDENDEURO-specific parts, such as;
- New Black and Orange, Hardenduro Graphics
- Orange Frame - Black Factory Racing Seat
- Map-Select Switch
- Orange Factory Frame Protector Set
- Metzeler 6 Days Extreme Tires
- Wrap-Around Handguard Kit
- Radiator Fan
- Black Anodized CNC Machined Triple Clamps
- Wp Xact closed Cartridge Front Fork featuring new Base Valve Preload Adjusters
- Skid Plate
- Floating Front Brake Disc
- Front Brake Disc Guard
- Solid Rear Brake Disc
- Orange Rear Brake Disc Guard
- Orange Supersprox Stealth Rear Sprocket
- Orange Oil Plug
- Clutch Slave Cylinder Protection
- Pull Straps