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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 450 SX Dirt Bike (2003-2006)
The KTM 450 SX is a high-performance motocross motorcycle produced from 2003 to 2006. It featured a 449.4 cc single-cylinder, liquid-cooled engine and a 4-speed gearbox, designed for competitive racing. The 2003 model introduced the 450cc engine, replacing the 400cc, with significant updates to engine cases, subframe, and bodywork. In 2005, a new frame and chassis were implemented for improved agility, alongside engine enhancements like a strengthened crankshaft and lighter piston. While the 2006 450 SX was largely a carryover, this year also saw the introduction of the next-generation 450 SX-F, featuring a DOHC engine and electric start, marking a significant evolution for the KTM motocross lineup. FAQ:
Q: How can I ensure this part fits my KTM 450 SX?
R: Please use the year and edition selector at the top of the page to confirm compatibility.
Maintenance
| Component | Interval | Details |
| Engine Oil and Oil Filter | Every 5 to 10 hours | 5 hours for aggressive/race riding; 10 hours for recreational riding. Oil filter should be changed with each oil change. |
| Air Filter | Every 5 to 15 hours | 5 hours (or after every ride for 2005) for aggressive/race riding; 15 hours for recreational riding. |
| Valve Inspections | Every 15 to 30 hours | 15 hours for aggressive/race riding (2004, 2006); 30 hours for recreational riding (2004, 2006) or for all styles (2003). |
| Top-End Inspections (piston, cylinder) | Every 30 to 60 hours | 30 hours for aggressive/race riding (2005, 2006); 50 hours (2005) or 60 hours (2006) for recreational riding. |
| Bottom-End Inspections (crankshaft, connecting rod) | Every 50 to 100 hours | 50 hours (2004, 2006) or 60 hours (2005) for aggressive/race riding; 100 hours for recreational riding (all years) or for all styles (2003). |