Motocross Bikes
2003KTM 65 SX
33 fields on record
The 2003 KTM 65 SX is a lightweight minibike designed for young and novice riders learning dirt bike fundamentals. Powered by a liquid-cooled 65cc two-stroke engine, it delivers sharp acceleration and agile handling ideal for cross training and beginner-level competition. Known for its compact dimensions, low seat height, and accessible power delivery, the 65 SX remains a proven entry-level platform in youth motocross.
- Capacity
- 64.9 ccm
- Engine
- Single, two-stroke
- Gearbox
- 6-speed
- Dry weight
- 55.6 kg
- Seat height
- 750 mm
- Power
- Not on record
Know it? Add it →
Other years
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built exclusively for motocross and off-road track racing to teach real race craft on a scaled-down, competition-grade two-stroke.
- Built for
- A snappy, high-revving two-stroke with a six-speed gearbox that rewards clutch and throttle skill, encouraging aggressive, race-focused riding.
- Not ideal for
- This is not suitable for adult riders, commuting, touring, passengers, or anyone seeking road-legal or long-distance 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?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 64.9 ccm
- Engine type
- Single, two-stroke
- Bore x stroke
- 45.0 x 40.8 mm
- Compression
- 12.5:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- Moric digital 2M1
- Valves per cylinder
- 1
- Lubrication system
- 0,3 l Motorex Topspeed 15W50
- Power
- Not on record - add it
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet multi-disc clutch, operated hydraulically
Dimensions & weight
- Wheelbase
- 1137 mm
- Seat height
- 750 mm
- Dry weight
- 55.6 kg
- Fuel capacity
- 3.40 litres
- Ground clearance
- 290 mm
Chassis & suspension
- Frame
- Chromium molybdenum central-type frame
- Front suspension
- USD Marzocchi 35 mm
- Rear suspension
- WP monoshock
- Front wheel travel
- 220 mm
- Rear wheel travel
- 270 mm
- Rake (fork angle)
- 25.5°
- Trail
- 69 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 200 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 160 mm
- Front tyre
- 60/100-14
- Rear tyre
- 80/100-12
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 | 2003 | 2009 | 2015 | 2020 | 2026 |
|---|---|---|---|---|---|
| Capacity | 65 cc | 65 cc | 65 cc | 65 cc | 65 cc |
| Dry weight | 56 kg | 56 kg | 56 kg | 53 kg | 54 kg |
| Seat height | 750 mm | 750 mm | 750 mm | 750 mm | 730 mm |
| Fuel capacity | 3.4 L | 3.3 L | 3.5 L | 3.5 L | 4.5 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 65 SX?
The 2003 KTM 65 SX has a Capacity of 64.9 ccm (3.96 cubic inches).
How many gears does the KTM 65 SX have?
The 2003 KTM 65 SX has a Gearbox of 6-speed.
How much does the KTM 65 SX weigh?
The 2003 KTM 65 SX has a Dry weight of 55.6 kg (122.6 pounds).
Shop this bike
Affiliate linksWe may earn a commission from qualifying eBay or Amazon purchases made through these links. As an Amazon Associate I earn from qualifying purchases.
The 2003 KTM 65 SX is a top-of-the-line motocross bike that delivers exceptional performance and handling. With its powerful 65cc engine and lightweight frame, this bike is perfect for young riders looking to take their skills to the next level. The KTM 65 SX also features top-notch suspension and braking systems, providing a smooth and controlled ride on any terrain. Whether you're hitting the track or tearing up the trails, this bike is guaranteed to impress.
Overall, the 2003 KTM 65 SX is a fantastic choice for young riders who want a high-performance motocross bike. Its impressive engine, lightweight design, and advanced suspension make it a top contender in its class. With its sleek styling and top-of-the-line components, the KTM 65 SX is sure to turn heads and deliver a thrilling ride every time. If you're in the market for a quality motocross bike for your young rider, the KTM 65 SX is definitely worth considering.
Please log in or register if you'd like to leave a comment.