Overview

2027 KTM SX 300

Motorcycle

IT'S HUNTING SEASON

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 KTM 300 SX is engineered for one task alone - to lead from the front.

Starting at $9,899 MSRP

Manufacturer suggested retail price. Does not include dealer fees, tax, title, or registration.

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Engine

Design

1-cylinder, 2-stroke engine

Displacement

293.2 cm³

Transmission

5-speed

Fuel-mixture generation

Keihin EFI, throttle body 39 mm

EMS

Vitesco Technologies EMS

Clutch primary drive teeth

Primary drive

26:72

Clutch

Wet, DDS multi-disc clutch, Brembo hydraulics

Clutch type

DDS multi-disc wet clutch

Clutch operation

Brembo hydraulics

Engine cylinder

Single cylinder

Engine stroke

2-Stroke

Chassis

Frame design

Central double-cradle-type 25CrMo4 steel

Front brake

Disc brake

Rear brake

Disc brake

Rear subframe design

Aluminum-reinforced polyamide

Chain

520, Non-sealed

Suspension

Front suspension

WP XACT-USD (AER), Ø 48 mm

Rear suspension

WP XACT Monoshock with linkage

Suspension travel (front)

310 mm

Suspension travel (rear)

300 mm

Front suspension adjustment

Compression (high and low speed), rebound

Rear suspension adjustment

Compression and rebound adjustable

Dimensions

Seat height

958 mm

Ground clearance

354 mm

Tank capacity (approx.)

7.2 l

Weight (without fuel)

99.4 kg

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 option allows riders to adjust high- and low-speed settings in a matter of seconds. The forks on the front end are also easily modified thanks to hand-adjustable clickers on the bottom of the fork shoe and top cap.

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 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. For 2026 there is a new fuel protector cap: you'll still have quick and easy access for maintencance but now more safety against any outside damage and accidental opening as well as preventing dirt from entering the sides of the connector.

Electric Start

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 don't sweat it. All you do is press the starter button and you blast off again to take the flag. This is the reality on the KTM SX models. Thanks to a 12,8V 2 Ah lithium ion battery is placed under the rider's seat, a high-quality starter & pickup and super robust design, the only thing you'll be kicking - is ass.

Serviceability

The KTM SX and SX-F range is engineered and designed to provide riders with easy-to-access service parts, as well as suspension adjustability. This permits faster trackside and off-season maintenance, as well as simplifying motocross for novice riders without pit crews. For 2026, a new threaded radiator cap allows easier and faster opening with reduced force.

2027 KTM SX 300

IT'S HUNTING SEASON

Specs & Features

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