My Garage
Select a ride to guarantee fitment.
My Garage
Add your vehicles to your garage. Several features will then be available to facilitate your searches.
- Store vehicles in your garage
- Easily find guaranteed fit products and accessories
- Get product recommendations
Available Online
Free shipping on orders over $99
Standard Fulfillment: -
Expedited Fulfillment: -
Lowest Price Guaranteed
Fast Shipping
Easy Returns
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 125 EXC Dirt Bike (1989-2017)
The KTM 125 EXC is an iconic enduro motorcycle, produced from 1989 to 2017. Renowned for its lightness and agility, it has been a popular choice for riders of all skill levels. Featuring a 124.8 cc single-cylinder two-stroke engine, it consistently evolved to deliver optimal performance on trails and in competition. Throughout its long production run, the 125 EXC underwent several significant revisions. A major change occurred in 2008 with a redesign focused on weight reduction and improved handling. In 2012, a completely revamped chassis was introduced, including a new chrome-molybdenum steel frame, an upgraded WP fork, and an aluminum swingarm. From 2009 onwards, a Six Days version, featuring premium components, was also offered. Q: How can I ensure parts fit my KTM 125 EXC?
A: To guarantee compatibility, please use the year and edition selector available on this page. This will help you find parts specific to your model.
Maintenance
| Component | Interval | Details |
| Engine Oil (Gear Oil) | Every 5 to 15 operating hours | 5 to 10 hours for aggressive/race-level riding; 10 to 15 hours for recreational riding. |
| Oil Filter | Not applicable | The 125 EXC's two-stroke engine does not use a separate engine oil filter. The gear oil lubricates the transmission and clutch. |
| Spark Plug | Periodic inspection and replacement | To be inspected and replaced as needed during general maintenance. The spark plug connector should also be checked. |
| Air Filter | Every 2 to 15 operating hours | 2 to 5 hours for aggressive/race-level riding or dusty/muddy conditions; 10 to 15 hours for recreational riding. Clean and re-oil regularly. |
| Coolant | Annually or every 40 to 50 hours | Check level periodically. Use coolant designed for aluminum and magnesium engine casings. |