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2025 KTM 300 SX

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Specs and Features

ENGINE

TRANSMISSION

5-speed

STARTER

Electric starter

STROKE

72 mm

BORE

72 mm

CLUTCH

Wet, DDS multi-disc clutch, Brembo hydraulics

DISPLACEMENT

293.2 cm³

EMS

Vitesco Technologies EMS

DESIGN

1-cylinder, 2-stroke engine

FUEL-MIXTURE GENERATION

Keihin EFI, throttle body 39 mm

CHASSIS

WEIGHT (WITHOUT FUEL)

99.4 kg

TANK CAPACITY (APPROX.)

7.2 l

WHEELBASE

1493 mm

FRONT BRAKE DISC DIAMETER

260 mm

REAR BRAKE DISC DIAMETER

220 mm

FRONT BRAKE

Disc brake

REAR BRAKE

Disc brake

CHAIN

520, Non-sealed

FRAME DESIGN

Central double-cradle-type 25CrMo4 steel

FRONT SUSPENSION

WP XACT-USD (AER), Ø 48 mm

GROUND CLEARANCE

354 mm

HANDLEBAR

Neken, aluminium Ø 28/22 mm

REAR SUSPENSION

WP XACT Monoshock with linkage

SEAT HEIGHT

958 mm

SILENCER

Aluminium

STEERING HEAD ANGLE

63.9 °

REAR SUBFRAME DESIGN

Aluminum-reinforced polyamide

SUSPENSION TRAVEL (FRONT)

310 mm

SUSPENSION TRAVEL (REAR)

300 mm

WHEELS

Spoked wheels with aluminium rims

2025 KTM 300 SX

When 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.

Easy Suspension Adjustment

As 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.

EFI + Power Valve

With 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!

Absolute Control

Get 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.

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.

Energy absorption

Besides the expertly crafted, hydro-formed, laser-cut, and robot-welded frame being engineered to provide exceptional rider feedback and straight-line stability, it consists of specifically calculated parameters of longitudinal and torsional flex. This means the frame acts as a "shock absorber" of sorts, making for a less harsh ride, resulting in less rider fatigue over many hard laps.

2025 KTM 300 SX

Specs and Features

2025 KTM 300 SX

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