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Description
Features
- Rubber sealed bearings for additional protection from water and dirt.
- Precision high-speed bearings manufactured to ABEC3 standards.
- Chevron SRI-2 Grease with hi-performance rust and oxidation inhibitors (-29ºC - 177ºC).
- Double lip seal Type TC.
Technical Specifications
- MFG. Part Number 25-1553
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). |