2011KTM 65 SX

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The 2011 KTM 65 SX is a liquid-cooled two-stroke minibike designed for young riders transitioning from pit bikes to competitive motocross. Powered by a 64.9cc single-cylinder engine with a six-speed gearbox, it delivers the aggressive performance and lightweight handling KTM is known for in the junior racing class. Best suited for aspiring motocross competitors aged 7-13, the 65 SX combines responsive acceleration with proven reliability.

Capacity: 64.9 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: 55.4 kg
Seat height: 750 mm
Power: Not on record
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What’s new for the 2011 KTM 65 SX

vs the 2010

Spec	2010	2011
Front suspension	Marzocchi USD 35 mm fork	Marzocchi USD 35 mm (1.38 in)
Front brakes	Single disc. Bremo	Single disc
Rear brakes	Single disc. Bremo	Single disc

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 2027

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 2011 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: AET digital
Lubrication system: Mixture oil lubrication 1:60
Power: Not on record - add it

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain
Clutch: Wet mDouble disk clutch, operated hydraulically

Dimensions & weight

Wheelbase: 1137 mm
Seat height: 750 mm
Dry weight: 55.4 kg
Fuel capacity: 3.50 litres
Ground clearance: 280 mm

Chassis & suspension

Frame: Double grinded central double-cradle-type frame. Subframe: Aluminium.
Front suspension: Marzocchi USD 35 mm (1.38 in)
Rear suspension: WP mono shock
Front wheel travel: 215 mm
Rear wheel travel: 270 mm
Rake (fork angle): 25.5°

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 198 mm
Rear brakes: Single disc
Rear brakes diameter: 160 mm
Front tyre: 60/100-14
Rear tyre: 80/100-12

Other

Color options: Orange, black, white

Specs last verified against published sources: October 2026.

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	2011	2015	2021	2027
Capacity	65 cc	65 cc	65 cc	65 cc	65 cc	65 cc
Dry weight	56 kg	56 kg	55 kg	56 kg	53 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	—