Motocross Bikes
2025KTM 85 SX 17-14
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The 2025 KTM 85 SX 17-14 is a liquid-cooled two-stroke motocross bike engineered for young intermediate riders progressing in competitive racing. Its potent 85cc single-cylinder engine delivers impressive power delivery through a six-speed transmission and wet clutch system. Known for nimble handling and proven reliability on the track, it remains the benchmark junior motocross machine.
- Capacity
- 84.9 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- 68.0 kg
- Seat height
- 845 mm
- Power
- Not on record
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What’s new for the 2025 KTM 85 SX 17-14
vs the 2024| Spec | 2024 | 2025 |
|---|---|---|
| Dry weight | 67.0 kg (147.7 pounds) | 68.0 kg (149.9 pounds) |
Other years
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- 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
- 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
- 1282 mm
- Seat height
- 845 mm
- Dry weight
- 68.0 kg
- Fuel capacity
- 5.20 litres
- Ground clearance
- 308 mm
Chassis & suspension
- Frame
- Central-tube frame with double-cradle. Aluminum-reinforced polyamide subframe.
- Front suspension
- XACT 43 WP Upside-Down fork, Ø 43 mm
- Rear suspension
- XACT WP PDS mono shock
- Front wheel travel
- 278 mm
- Rear wheel travel
- 289 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/black/grey
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 | 2022 | 2025 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 85 cc | 85 cc | 85 cc | 85 cc | 85 cc | 85 cc |
| Dry weight | 68 kg | 66 kg | 68 kg | 67 kg | 68 kg | 68 kg |
| Seat height | 900 mm | 845 mm | 855 mm | 865 mm | 845 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 2025 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 2025 KTM 85 SX 17-14 has a Gearbox of 6-speed.
How much does the KTM 85 SX 17-14 weigh?
The 2025 KTM 85 SX 17-14 has a Dry weight of 68.0 kg (149.9 pounds).
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