Motocross Bikes

2016KTM 50 SX

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The 2016 KTM 50 SX is a lightweight motocross bike engineered for young riders and beginners seeking their first competitive off-road experience. Its potent 49cc two-stroke engine delivers accessible performance, while premium WP suspension and central-tube frame geometry provide nimble handling and reliability. Known for its proven entry-level racing pedigree and responsive power delivery.

Capacity: 49.0 ccm
Engine: Single, two-stroke
Gearbox: 1-speed
Dry weight: 41.5 kg
Seat height: 684 mm
Power: 5.4 HP (4.0 kW)

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What’s new for the 2016 KTM 50 SX

vs the 2015

Spec	2015	2016
Dry weight	39.8 kg (87.7 pounds)	41.5 kg (91.5 pounds)
Front suspension	WP Suspension USD 35	WP upside-down Ø 35 mm
Rear suspension	WP Suspension 3614 BAEM	WP shock absorber

Other years 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 & trail80%

Cornering60%

City riding5%

Daily riding5%

Touring5%

Two-up0%

Track55%

Best for: It exists purely to teach a child the fundamentals of balance, throttle control, and off-road riding in a safe, low-powered package.
Built for: It behaves like a purpose-built miniature dirt bike, docile and forgiving with an automatic single-speed gearbox that removes clutch and shifting complexity so a child can focus on riding.
Not ideal for: It is not suitable for adults, taller teens, road use, touring, or anyone seeking real speed or highway 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 684mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2016 KTM 50 SX, with a cramped knee angle of around 55 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: 49.0 ccm
Power: 5.4 HP (4.0 kW)
Engine type: Single, two-stroke
Power/weight ratio: 0.1301 HP/kg (dry)
Bore x stroke: 39.5 x 40.0 mm
Compression: 12.5:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Ignition: Seletra 2p D36
Lubrication system: Mixture oil lubrication

Transmission

Gearbox: 1-speed
Transmission type: Manual
Final drive: Chain
Clutch: Centrifugal clutch (adjustable)

Dimensions & weight

Wheelbase: 1032 mm
Seat height: 684 mm
Dry weight: 41.5 kg
Fuel capacity: 2.30 litres
Ground clearance: 252 mm

Chassis & suspension

Frame: Central-tube frame with double-cradle
Front suspension: WP upside-down Ø 35 mm
Rear suspension: WP shock absorber
Front wheel travel: 205 mm
Rear wheel travel: 185 mm
Rake (fork angle): 24.0°
Trail: 90 mm

Brakes & wheels

Front brakes: Single disc. Four-piston calipers.
Front brakes diameter: 160 mm
Rear brakes: Single disc. Two-piston calipers.
Rear brakes diameter: 160 mm
Front tyre: 60/100-12
Rear tyre: 2.75-10

Other

Color options: Orange/white/black
Comments: For absolute beginners, the engine power can be restricted to 5.5 hp with a kit.

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	2006	2011	2016	2017	2022	2027
Capacity	49 cc	49 cc	49 cc	49 cc	49 cc	50 cc
Dry weight	39 kg	40 kg	42 kg	42 kg	42 kg	44 kg
Seat height	650 mm	684 mm	684 mm	684 mm	665 mm	653 mm
Fuel capacity	1.8 L	2.3 L	2.3 L	2.3 L	2.3 L	2.3 L