Motocross Bikes

2013KTM 65 SX

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The 2013 KTM 65 SX is a lightweight motocross machine designed for young riders and beginners transitioning to competitive riding. Powered by a nimble 65cc two-stroke engine with a 6-speed gearbox, it delivers excellent handling and maneuverability on mixed terrain. Known for its durability and aggressive styling, the 65 SX remains a popular choice for junior motocross racing and off-road training.

Capacity: 64.9 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: 55.5 kg
Seat height: 750 mm
Power: Not on record
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⇄ Compare with another bike All model years

What’s new for the 2013 KTM 65 SX

vs the 2012

Spec	2012	2013
Dry weight	55.4 kg (122.1 pounds)	55.5 kg (122.4 pounds)
Front suspension	WP Suspension USD 35	WP Â Suspension USD Â 35
Rear suspension	WP Suspension 3614 BAVP	WP Â Suspension Â 3614 BAVP
Front brakes	Single disc	Single disc. Four-piston calipers.
Rear brakes	Single disc	Single disc. Two-piston calipers.

Other years 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail90%

Cornering80%

City riding5%

Daily riding10%

Touring5%

Two-up0%

Track85%

Best for: Built exclusively for motocross and off-road track racing to teach real race craft on a scaled-down, competition-grade two-stroke.
Built for: A snappy, high-revving two-stroke with a six-speed gearbox that rewards clutch and throttle skill, encouraging aggressive, race-focused riding.
Not ideal for: This is not suitable for adult riders, commuting, touring, passengers, or anyone seeking road-legal or long-distance capability.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 750mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2013 KTM 65 SX, with a cramped knee angle of around 65 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 750 mm or under — Short Kings →

Find bikes that fit your height →

Full specifications

Engine

Capacity: 64.9 ccm
Engine type: Single, two-stroke
Bore x stroke: 45.0 x 40.8 mm
Compression: 12.5:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Ignition: Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment
Valves per cylinder: 1
Lubrication system: Mixture oil lubrication
Power: Not on record - add it

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain
Clutch: Wet multi-disc clutch / hydraulically operated

Dimensions & weight

Wheelbase: 1137 mm
Seat height: 750 mm
Dry weight: 55.5 kg
Fuel capacity: 3.50 litres
Ground clearance: 280 mm

Chassis & suspension

Frame: Central tube frame of chrome molybdenum steel tubing, powder-coated
Front suspension: WP Â Suspension USD Â 35
Rear suspension: WP Â Suspension Â 3614 BAVP
Front wheel travel: 205 mm
Rear wheel travel: 185 mm
Rake (fork angle): 25.5°
Trail: 220 mm

Brakes & wheels

Front brakes: Single disc. Four-piston calipers.
Front brakes diameter: 198 mm
Rear brakes: Single disc. Two-piston calipers.
Rear brakes diameter: 160 mm
Front tyre: 60/100-14
Rear tyre: 80/100-12

Other

Color options: Orange/black

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	2003	2009	2013	2015	2020	2026
Capacity	65 cc	65 cc	65 cc	65 cc	65 cc	65 cc
Dry weight	56 kg	56 kg	56 kg	56 kg	53 kg	54 kg
Seat height	750 mm	750 mm	750 mm	750 mm	750 mm	730 mm
Fuel capacity	3.4 L	3.3 L	3.5 L	3.5 L	3.5 L	4.5 L