Motocross Bikes
2021KTM 85 SX 17-14
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The 2021 KTM 85 SX 17-14 is a competition-focused two-stroke motocross bike designed for junior riders transitioning from smaller machines. Its potent 84.9cc liquid-cooled engine delivers responsive power delivery ideal for learning advanced racecraft on the track. Known for nimble handling and proven reliability, it remains a top choice for aspiring motocross competitors.
- Capacity
- 84.9 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- 67.0 kg
- Seat height
- 865 mm
- Power
- Not on record
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What’s new for the 2021 KTM 85 SX 17-14
vs the 2020| Spec | 2020 | 2021 |
|---|---|---|
| Seat height | 855 mm (33.7 inches) | 865 mm (34.1 inches) |
| Fuel capacity | 5.00 litres (1.32 US gallons) | 5.20 litres (1.37 US gallons) |
| Front suspension | WP upside-down Ø 43 mm | XACT 43 WP Upside-Down fork, Ø 43 mm |
| Rear suspension | WP PDS shock absorber | WP Xplor PDS shock absorber |
| Front brakes | Single disc. Four-piston calipers. | Single disc |
| Rear brakes | Single disc. Two-piston calipers. | Single disc |
Other years
2005
2006
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2010
2011
2012
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2014
2015
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2018
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2020
2021
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2023
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2026
2027
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- A dedicated youth motocross racer built for closed dirt circuits, jumps and berms - pure competition, not transport.
- Built for
- Sharp, revvy and aggressive - a snappy liquid-cooled two-stroke that rewards commitment with explosive acceleration and razor agility.
- Not ideal for
- Not for road use, commuting, touring or passengers; no lights, kick-start only, knobby tires and race-only intent make it street-illegal.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- 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
- MEDJ digital EMS
- 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
- 865 mm
- Dry weight
- 67.0 kg
- Fuel capacity
- 5.20 litres
- Ground clearance
- 336 mm
Chassis & suspension
- Frame
- Central-tube frame with double-cradle
- Front suspension
- XACT 43 WP Upside-Down fork, Ø 43 mm
- Rear suspension
- WP Xplor PDS shock absorber
- Front wheel travel
- 278 mm
- Rear wheel travel
- 305 mm
- Rake (fork angle)
- 24.0°
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 240 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 210 mm
- Front tyre
- 70/100-17
- Rear tyre
- 90/100-14
Other
- Color options
- Orange/white/black
Specs last verified against published sources: .
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 | 2016 | 2021 | 2022 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 85 cc | 85 cc | 85 cc | 85 cc | 85 cc | 85 cc |
| Dry weight | 68 kg | 66 kg | 68 kg | 67 kg | 67 kg | 68 kg |
| Seat height | 900 mm | 845 mm | 855 mm | 865 mm | 865 mm | 845 mm |
| Fuel capacity | 5 L | 5 L | 5 L | 5.2 L | 5.2 L | 5.4 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the KTM 85 SX 17-14?
The 2021 KTM 85 SX 17-14 has a Capacity of 84.9 ccm (5.18 cubic inches).
How many gears does the KTM 85 SX 17-14 have?
The 2021 KTM 85 SX 17-14 has a Gearbox of 6-speed.
How much does the KTM 85 SX 17-14 weigh?
The 2021 KTM 85 SX 17-14 has a Dry weight of 67.0 kg (147.7 pounds).
Shop this bike
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The 2021 KTM 85 SX 17-14 is an impressive off-road motorcycle that delivers exceptional performance and handling. With a powerful 85cc engine and a lightweight chassis, this bike is designed for young riders looking to conquer the dirt. Its 17-inch front and 14-inch rear wheels provide excellent traction and stability, while the high-quality suspension system ensures a smooth and controlled ride over rough terrain. Whether you're hitting the trails or racing on the track, the KTM 85 SX 17-14 is a top choice for riders who demand the best in performance and reliability.
In addition to its impressive capabilities, the 2021 KTM 85 SX 17-14 boasts a sleek and aggressive design that is sure to turn heads. The striking orange color scheme and bold KTM branding give this bike a distinctive look that sets it apart from the competition. With its combination of power, precision, and style, the KTM 85 SX 17-14 is an outstanding choice for young riders who are serious about off-road riding. Whether you're a competitive racer or a weekend warrior, this bike has everything you need to take your off-road adventures to the next level.
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