Motocross Bikes

2012KTM 85 SX 19-16

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The 2012 KTM 85 SX 19-16 is a competitive mini motocross bike designed for young riders aged 7-12 years old seeking serious off-road performance. Its liquid-cooled two-stroke engine with rotation-dependent exhaust flap delivers punchy acceleration ideal for jumping and technical terrain. This machine is best known for winning amateur youth racing championships and offering professional-level handling in a beginner-friendly package.

Capacity: 84.9 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: 69.0 kg
Seat height: 900 mm
Power: Not on record
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What’s new for the 2012 KTM 85 SX 19-16

vs the 2011

Spec	2011	2012
Dry weight	68.0 kg (149.9 pounds)	69.0 kg (152.1 pounds)
Seat height	875 mm (34.4 inches)	900 mm (35.4 inches)
Front suspension	WP USD 43 mm	WP Upside-Down 43 mm
Rear suspension	WP PDS mono shock	WP-PDS mono shock

Other years 2005 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%

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 900mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2012 KTM 85 SX 19-16, with a cramped knee angle of around 80 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 821-900 mm — Long Legs →

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Full specifications

Engine

Capacity: 84.9 ccm
Engine type: Single, two-stroke
Bore x stroke: 47.0 x 49.0 mm
Compression: 12.5:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Ignition: Moric digital 2M1
Lubrication system: Mixture lubrication 1:40
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: 1290 mm
Seat height: 900 mm
Dry weight: 69.0 kg
Fuel capacity: 5.00 litres
Ground clearance: 377 mm

Chassis & suspension

Frame: Double grinded central double-cradle-type frame. Subframe: Aluminium.
Front suspension: WP Upside-Down 43 mm
Rear suspension: WP-PDS mono shock
Front wheel travel: 270 mm
Rear wheel travel: 300 mm
Rake (fork angle): 24.0°

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 220 mm
Rear brakes: Single disc
Rear brakes diameter: 210 mm
Front tyre: 70/100-19
Rear tyre: 90/100-16

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	2005	2011	2012	2017	2022	2027
Capacity	85 cc	85 cc	85 cc	85 cc	85 cc	85 cc
Dry weight	68 kg	68 kg	69 kg	69 kg	68 kg	69 kg
Seat height	900 mm	875 mm	900 mm	890 mm	890 mm	871 mm
Fuel capacity	5 L	5 L	5 L	5 L	5.2 L	5.4 L