2024KTM 85 SX 19-16

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The 2024 KTM 85 SX 19-16 is a liquid-cooled two-stroke motocross bike designed for young intermediate riders aged 12-16 years old. Known for its lightweight agility and responsive handling, this 84.9cc machine delivers strong power delivery through a six-speed transmission, making it ideal for both training and competitive racing on closed courses.

Capacity: 84.9 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: 68.0 kg
Seat height: 875 mm
Power: Not on record
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Other years 2007 2008 2009 2010 2011 2012 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail90%

Cornering88%

City riding5%

Daily riding5%

Touring3%

Two-up0%

Track85%

Best for: Built purely for motocross racing and track training, with a peaky 2-stroke powerband and race-tuned suspension rather than any road or leisure use.
Built for: Sharp, lightweight, and eager to change direction, the 85 SX rewards aggressive throttle control and active riding with explosive acceleration typical of a small-bore 2-stroke.
Not ideal for: It is not suitable for adult riders, commuting, passengers, or anyone wanting a comfortable, road-legal, long-distance machine.

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 875mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with tip-toe one foot on the 2024 KTM 85 SX 19-16, with a cramped knee angle of around 75 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.

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Full specifications

Engine

Capacity: 84.9 ccm
Engine type: Single, two-stroke
Compression: 12.5:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Ignition: MEDJ digital EMS
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, Formula hydraulics

Dimensions & weight

Wheelbase: 1290 mm
Seat height: 875 mm
Dry weight: 68.0 kg
Fuel capacity: 5.20 litres
Ground clearance: 362 mm

Chassis & suspension

Frame: Central double-cradle-type 25CrMo4 steel
Front suspension: XACT 43 WP Upside-Down fork, Ã˜ 43 mm
Rear suspension: XACT WP PDS mono shock
Front wheel travel: 278 mm
Rear wheel travel: 305 mm
Rake (fork angle): 24.0°
Trail: 220 mm

Brakes & wheels

Front brakes: Single disc. Four-piston calipers.
Front brakes diameter: 240 mm
Rear brakes: Single disc. Two-piston calipers.
Rear brakes diameter: 210 mm
Front tyre: 70/100-19
Rear tyre: 90/100-16

Other

Color options: Orange/white/grey

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	2007	2011	2017	2021	2024	2025
Capacity	84.90 ccm (5.18 cubic inches)	84.90 ccm (5.18 cubic inches)	84.93 ccm (5.18 cubic inches)	84.9 ccm (5.18 cubic inches)	84.9 ccm (5.18 cubic inches)	84.9 ccm (5.18 cubic inches)
Dry weight	68.0 kg (149.9 pounds)	68.0 kg (149.9 pounds)	68.5 kg (151.0 pounds)	68.0 kg (149.9 pounds)	68.0 kg (149.9 pounds)	69.0 kg (152.1 pounds)
Seat height	900 mm (35.4 inches)	875 mm (34.4 inches)	890 mm (35.0 inches)	890 mm (35.0 inches)	875 mm (34.4 inches)	871 mm (34.3 inches)
Fuel capacity	5.00 litres (1.32 gallons)	5.00 litres (1.32 gallons)	5.00 litres (1.32 gallons)	5.20 litres (1.37 US gallons)	5.20 litres (1.37 US gallons)	54.00 litres (14.27 US gallons)
Color options	—	Orange, black, white	Orange/white/black	Orange/white/black	Orange/white/grey	Orange/black/grey