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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 SX Dirt Bike (1998-2002)
The KTM 400 SX, produced between 1998 and 2002, is a motocross and off-road motorcycle renowned for its robustness and performance. Equipped with a 398 cc liquid-cooled, single-cylinder four-stroke engine, it was designed for competition on track and trail. This period saw significant evolutions for the model. A major evolution occurred in 2000 with the introduction of a new generation of four-stroke engines, often referred to as RFS (Racing Four Stroke). Prior to 2000, 400cc models primarily used the LC4 engine. The new RFS engine was accompanied by significant chassis and suspension modifications, including new WP forks and PDS rear suspension improvements, aiming for a lighter, more compact, and more maneuverable motorcycle. In 2001, the 400 SX also saw its transmission upgrade from four to six speeds, enhancing its versatility and performance. FAQ :
Q : How can I ensure this part fits my KTM 400 SX?
R : Please use our year and edition selector at the top of the page to confirm exact compatibility with your specific model.
Maintenance
| Component | Interval | Details |
| Engine Oil and Oil Filter | Every 5 to 15 hours | Clean oil screen and drain plug magnet with each oil change. |
| Air Filter | Every 5 to 15 hours | Inspect and clean more frequently (every 2-3 hours) in dusty or muddy conditions. |
| Drive Chain | Every 5 hours | Clean and lubricate. |
| General Service | First service after 3 hours; subsequent services every 15 hours | For competition use, perform the 15-hour service after each race. Do not exceed intervals by more than 2 hours. |