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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 620 SX Motorcycle - Street (1996-1999)
The KTM 620 SX, produced from 1996 to 1999, was a high-performance, single-cylinder, four-stroke motocross motorcycle. Part of KTM's renowned LC4 engine family, it was engineered for robust off-road performance. This liquid-cooled machine was a staple in the motocross scene, known for its powerful engine and durable construction, making it a popular choice for riders seeking a competitive edge during its production years. Throughout its 1996-1999 production, the 620 SX maintained its core design as a single model, without distinct sub-trims. While engine displacement saw a minor change from 608cc to 609cc between 1997 and 1998, the fundamental LC4 engine platform, including its liquid-cooled, SOHC, 4-valve design and integrated balancer shaft for vibration reduction, remained consistent. This ensures a largely uniform experience across these model years. Q: Does this product fit all KTM 620 SX models from 1996 to 1999?
A: To ensure perfect compatibility, please use the year and edition selector on this page.
Maintenance
| Component | Interval | Details |
| Engine Oil and Oil Filter | Every 10 to 15 h (recreational riding) or 5 to 10 h (aggressive/race riding) | Replace oil filter(s) with every oil change. |
| Air Filter | Every 10 to 15 h (recreational riding) or 5 h (aggressive/race riding) | Clean and service. More frequent cleaning advised in dusty or muddy conditions. |
| Belt | Not applicable | These models are chain-driven, there is no drive belt. Chain and sprocket maintenance is recommended. |
| Spark Plug | 6 000 to 10 000 km (standard) or 15 000 to 20 000 km (iridium/platinum) | Inspect at 5 000 km. Aggressive riding or frequent short trips can shorten lifespan. |
| Coolant | At least every two years (general), annually (regular), or every six months (racing) | Use recommended type. Inspect hoses and seals for wear. |