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Description
Technical Specifications
- MFG. Part Number 185-726-0001
Vehicle Information
Honda XR100 Dirt Bike (1981-1984)
The Honda XR100, produced from 1981 to 1984, was a popular air-cooled, four-stroke trail bike designed for entry-level and casual riders. It featured a robust 99cc single-cylinder engine, delivering approximately 6 horsepower at 8,000 RPM, paired with a 5-speed manual transmission. This model was known for its simplicity and reliability, making it an excellent choice for learning or recreational off-road riding. Throughout the 1981-1984 production run, the XR100 maintained consistent core specifications. There were no significant mid-cycle generation changes or distinct trim levels offered. While the 1981 model might sometimes be referenced as "XR100A" in parts listings, this did not signify a different specification or feature set. The major evolution for this model, including a shift to a single-shock rear suspension and a plastic fuel tank (the XR100R), occurred in the 1985 model year, which is outside this specific range. The 1981-1984 XR100 models retained a conventional telescopic front fork and twin rear shocks. FAQ:
Q: How do I know which parts fit my 1981-1984 Honda XR100?
A: To ensure perfect compatibility, please use the year and model selector at the top of this page.
Maintenance
| Component | Interval | Details |
| Engine Oil Changes | Every 10 hours (recreational use) or every 5 hours (aggressive/race use) | The oil filter should be replaced during oil changes. |
| Air Filter Service | 1981 model: Every 15 hours (recreational) or every 5-10 hours (aggressive). 1982-1984 models: Every 10 hours (recreational) or every 5 hours (aggressive). | Regular inspection and cleaning are crucial, especially after riding in dusty conditions. |
| Spark Plug | Regular inspection and replacement as needed. | Type: NGK C7HS (1980-1981), NGK CR7HS (1982-1984). Gap: 0.6 to 0.7 mm. Inspect cap and lead. |
| Valve Inspections | 1981 model: Every 30 hours (recreational) or every 15 hours (aggressive). 1982-1984 models: Every 20 hours (recreational) or every 10 hours (aggressive). | Valve adjustments are essential for maintaining engine performance. |
| Top-End Inspections | 1981 model: Every 50 hours (recreational) or every 25 hours (aggressive). 1982-1984 models: Every 40 hours (recreational) or every 20 hours (aggressive). | |
| Bottom-End Inspections | 1981 model only: Every 100 hours (recreational) or every 50 hours (aggressive). |