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Description
Features
- Designed as a direct replacement for the OEM design
- Reduce the friction dragging down your drivetrain
- Polyurethane roller with 98A durometer harness for long life
- Precision contact sealed bearings keep water and dirt away
- P/N 79-5001, 79-5002 and 79-5006 feature the outer mechanical seal to protect the bearings from dirt and water. (All other designs are too narrow to incorporate this design and use triple lip sealed ball bearings for superior dirt exclusion compared to OEM bearings.
Technical Specifications
- MFG. Part Number 79-5003
Vehicle Information
KTM 400 SC Dirt Bike (1995-2000)
The KTM 400 SC series, produced from 1995 to 2000, represents a pivotal era for the Austrian manufacturer in the off-road and enduro motorcycle categories. During this period, the "400 SC" designation encompassed a diverse range of models, notably featuring both two-stroke and four-stroke engine configurations, all sharing a consistent 398 cc displacement. Horsepower varied significantly, from approximately 27 HP for the two-stroke models to 41-44 HP for the more powerful four-stroke variants like the LC4, SXC, and EXC. This era was marked by KTM's strategic shift towards four-stroke technology. A significant generational change occurred in 2000 with the introduction of new generation four-stroke 400 SX and 400 EXC models. These machines featured an entirely new liquid-cooled, SOHC, 4-valve engine designed for increased torque, alongside substantial chassis updates. These included new WP 43mm forks, "flower-shaped" brake discs, lighter hubs, a larger 20mm front axle, and a re-valved PDS rear suspension. The EXC models also gained electric start, enhancing convenience. These updates made the 2000 models lighter, more compact, and highly competitive. FAQ:
Q: How do I ensure I select the correct parts for my KTM 400 SC?
A: Given the significant variations in engine types and chassis updates across the 1995-2000 range, please use our year and model selector to find parts specifically compatible with your motorcycle. Q: Were all 400 SC models two-stroke?
A: No, the "400 SC" designation was used for both two-stroke and four-stroke models during this period, with a major shift to new generation four-stroke platforms in 2000.
Maintenance
| Component | Interval | Details |
| Engine Oil and Oil Filter | Every 5 to 15 hours | Change oil filter with each oil change. Shorter interval (5-10 h) for aggressive or race-level riding, longer (10-15 h) for recreational riding. |
| Air Filter | Every 5 to 10 hours | Regularly clean and re-oil. Inspect for tears or damage. Shorter interval (5 h) for aggressive or race-level riding, longer (10 h) for recreational riding. |
| Valve Inspections | Every 15 to 30 hours | Shorter interval (15 h) for aggressive or race-level riding, longer (30 h) for recreational riding. |
| Top-End Inspections (cylinder, piston, rings) | Every 30 to 60 hours | Shorter interval (30-40 h) for aggressive or race-level riding, longer (40-60 h) for recreational riding. |
| Bottom-End Inspections (crankshaft, bearings) | Every 50 to 100 hours | Shorter interval (50 h) for aggressive or race-level riding, longer (80-100 h) for recreational riding. |