Motocross Bikes
2027KTM 300 SX
28 fields on record
The KTM 300 SX continues for 2027 as KTM's flagship two-stroke motocross weapon, powered by a 293.2cc single-cylinder two-stroke engine with a 39mm Keihin throttle body, through a 5-speed gearbox and Brembo-actuated wet clutch. A chromoly steel frame, WP XACT air fork, and WP XACT monoshock give it a 958mm seat height and a claimed 7.2-litre fuel capacity. Light, explosive, and race-ready, it remains a pure closed-course competition machine for experienced riders.
- Capacity
- 293.2 ccm
- Engine
- Single, two-stroke
- Gearbox
- 5-speed
- Dry weight
- 99.4 kg
- Seat height
- 958 mm
- Power
- 29.3 HP (21.6 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- A pure-bred motocross weapon built for racing berms, jumps and rough terrain at full attack on closed circuits.
- Built for
- Featherweight, hard-hitting and razor-sharp - a violent, high-revving two-stroke MX machine that lives to be ridden hard.
- Not ideal for
- Not for commuting, touring, road riding, passengers or anyone wanting a comfortable, easygoing bike. No lights, no plate.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 293.2 ccm
- Power
- 29.3 HP (21.6 kW)
- Engine type
- Single, two-stroke
- Power/weight ratio
- 0.2948 HP/kg (dry)
- Bore x stroke
- 72.0 x 72.0 mm
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- Vitesco Technologies EMS
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, DDS multi-disc clutch, Brembo hydraulics
Dimensions & weight
- Wheelbase
- 1493 mm
- Seat height
- 958 mm
- Dry weight
- 99.4 kg
- Fuel capacity
- 7.20 litres
- Ground clearance
- 354 mm
Chassis & suspension
- Frame
- Central double-cradle-type 25CrMo4 steel
- Front suspension
- WP XACT-USD (AER), Ø 48 mm
- Rear suspension
- WP XACT Monoshock with linkage
- Front wheel travel
- 310 mm
- Rear wheel travel
- 300 mm
- Rake (fork angle)
- 26.1°
Brakes & wheels
- Front brakes
- Disc brake
- Front brakes diameter
- 260 mm
- Rear brakes
- Disc brake
Specs last verified against published sources: .
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2023 | 2024 | 2025 | 2026 | 2027 |
|---|---|---|---|---|---|
| Capacity | 293 cc | 293 cc | 293 cc | 293 cc | 293 cc |
| Dry weight | 99 kg | 99 kg | 99 kg | 99 kg | 99 kg |
| Seat height | 958 mm | 958 mm | 958 mm | 958 mm | 958 mm |
| Fuel capacity | 7.2 L | 7.2 L | 7.2 L | 7.2 L | 7.2 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the KTM 300 SX?
The 2027 KTM 300 SX has a Capacity of 293.2 ccm (17.89 cubic inches).
What engine power does the KTM 300 SX have?
The 2027 KTM 300 SX has a Power of 29.3 HP (21.6 kW).
How many gears does the KTM 300 SX have?
The 2027 KTM 300 SX has a Gearbox of 5-speed.
How much does the KTM 300 SX weigh?
The 2027 KTM 300 SX has a Dry weight of 99.4 kg (219.1 pounds).
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