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Description
FEATURES
- 52100 bearing steel is used in these rebuild kits for motocross, off-road, and dual-purpose bikes
- Kits include all the bearings, seals, shafts and spacers required for a complete rebuild
- Thrust bearings are replaced with Teflon® bearings, which perform better in dirt and water
- Expansive application chart covers bikes from the 70's to present
- Imported
Technical Specifications
- MFG. Part Number 28-1139
Vehicle Information
KTM 50 SXR Dirt Bike (1995-1998)
The KTM 50 SXR, produced from 1995 to 1998, is a popular mini motocross bike designed for young riders. This range of models consistently featured a robust 49-50cc single-cylinder, two-stroke, air-cooled engine, paired with a simple 1-speed automatic transmission and a centrifugal clutch, making it an accessible entry point into off-road riding. While the core platform remained consistent, KTM introduced distinct trim levels with specific engine configurations in the later years of this period. From 1997 to 1998, models like the SXR Pro Jr., SXR Pro Sr., and SXR Adventure were equipped with unique engine codes (S5-T, S5-GS, S5-E respectively). These variations suggest tailored performance characteristics for different rider sizes and skill levels, rather than a complete generational overhaul. The base SXR model was available in 1995 and 1996. FAQ:
Q: How can I be sure these parts fit my KTM 50 SXR?
A: To guarantee compatibility, please use the year and edition selector at the top of this page. This will ensure you find parts specifically designed for your model.
Maintenance
| Component | Interval | Details |
| Engine Oil (Transmission) | Every 3 to 10 hours | Interval varies significantly by model year, trim (e.g., Pro Jr., Pro Sr.), and riding style (recreational or aggressive/race). |
| Transmission Oil Screen | Inspect and clean as needed | These models typically use a screen rather than a traditional oil filter. Check during transmission oil changes. |
| Chain | Every 5 hours | Clean and lubricate. These models use a chain drive, not a belt. |
| Spark Plug | Inspect regularly; replace as needed | No specific replacement interval provided in sources. Check electrode gap. |
| Air Filter | Every 5 hours (more frequently in harsh conditions) | Inspect and clean every 5 hours. Clean every 2-3 hours or after every ride in dusty/muddy conditions or for aggressive riding. |
| Coolant | Inspect level and condition regularly | No specific replacement interval provided in sources. Check for leaks and antifreeze quantity. |