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Description
Technical Specifications
- MFG. Part Number 1030020035
Vehicle Information
KTM 50 Dirt Bike (1997-2022)
The KTM 50 series, produced from 1997 to 2022, is a renowned line of youth motocross and off-road motorcycles. Designed for aspiring riders, these models consistently featured a 49cc to 50cc two-stroke, single-cylinder engine, typically paired with an automatic single-speed transmission and a centrifugal clutch. Over its production run, the KTM 50 saw significant evolution in its trims and technical specifications. Early models, particularly in the late 1990s and early 2000s, often featured air-cooled engines and simpler configurations, with horsepower around 2.04 HP. As the series progressed, liquid cooling became standard for many SX models, and power output increased significantly, reaching approximately 5.5 HP in later versions like the 2018-2022 SX and Factory Edition. The lineup expanded to include various trims such as the "Adventure" series, "SX Pro" models, "SX Mini" for younger riders, and the high-performance "SX Factory Edition" introduced around 2021, featuring race-inspired components and advanced suspension. These changes reflect KTM's continuous effort to cater to different skill levels and riding conditions within the youth segment. Q: How do I know which KTM 50 model year or trim is right for my needs?
A: To ensure compatibility with specific parts or to find the right model for you, please use the year and edition selector on this page.
Maintenance
| Component | Interval | Details |
| Engine Oil (Transmission Oil) Change | Every 3 to 5 hours of operation, depending on riding intensity. | This refers to the transmission oil, as the 2-stroke engine is lubricated by oil mixed with fuel. |
| Oil Filter | Inspect and clean/replace screen or filter during transmission oil change. | KTM 50 models typically use a screen or filter for the transmission oil, not a conventional engine oil filter like 4-stroke engines. |
| Belt | Not applicable | These models are chain-driven. |
| Spark Plug | Inspect and clean regularly; replace as needed. Cleaning recommended every 1,000 km to extend lifespan. | Check electrode gap and condition during routine maintenance. General lifespan can be up to 16,000 km, but cleaning every 1,000 km can extend it to 20,000 km for 2-stroke engines. |
| Air Filter Service | Every 2 to 10 hours of operation, or after every ride in dusty/muddy conditions. | More frequent service is required for aggressive riding or in dusty/muddy environments. |
| Coolant | Check level regularly. Replace every 12 to 24 months or every 90 operating hours. | Ensure engine is cold when checking level. Complete draining and replacement is recommended for optimal performance. |