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Description
Take your performance to new heights with a Jet Kit for your vehicles. Increase power and improve performance throughout the entire RPM range, while improving throttle response and smoothness. These Jet Kits take the guesswork out of tuning your vehicles.
Whether you’re rolling with a stock vehicles or you’ve made some modifications, our Jet Kit will optimize your air/fuel ratio to eliminate rough spots and help you take control of your vehicles’s power. You can go with a Stage 1 Jet Kit to give your stock engine a 5% boost of horsepower or send it all the way up to Stage 3 if you’ve already made major modifications to your vehicles.
STAGE 1 DETAILS
Perfect for vehicles with a stock engine using the stock airbox, air filter, and pipes. Stage 1 Jet Kits are engineered to improve throttle response and deliver approximately 5% more horsepower than stock. These kits are fully adjustable to allow the use of well-designed aftermarket pipes and stock replacement air filters, like K&N.
STAGE 2 DETAILS
If you’ve made slight modifications to your vehicles, but still crave more performance, a Stage 2 Jet Kit is the solution. With a Stage 2 Jet Kit, you could see power gains of approximately 8%. This kit is intended for vehicles with stock or mildly tuned engines using a well - designed aftermarket pipe with a modified airbox and a stock replacement air filter.
FEATURES
- 5-8% power range.
- Fully adjustable.
- Increases power and drivability.
- For carbureted vehicles only.
Technical Specifications
- MFG. Part Number 3243
Vehicle Information
Yamaha YSR50 Motorcycle - Street (1987-1992)
The Yamaha YSR50, produced from 1987 to 1992, was a popular miniature sportbike known for its scaled-down YZR 500 styling. It consistently featured an air-cooled, 49cc two-stroke, single-cylinder engine, delivering around 7 horsepower through a 5-speed manual transmission. This model was equipped with Yamaha's Autolube oil injection system. Throughout its production run from 1987 to 1992, the YSR50 maintained a consistent engine and core design. There were no significant mid-cycle generation or engine changes; variations were primarily cosmetic, focusing on different color schemes each year. FAQ:
Q: How do I ensure I select the correct parts for my Yamaha YSR50?
A: To guarantee fitment, please use the year and edition selector at the top of this page.
Maintenance
| Component | Interval | Details |
| Spark Plug | 1,000 km (break-in), then every 3,000 km or 6 months, and every 6,000 km or 12 months | Check condition, clean or replace if necessary. |
| Air Filter | 1,000 km (break-in), then every 3,000 km or 6 months, and every 6,000 km or 12 months | Clean. Replace if necessary. More frequent service in dusty or wet conditions. |
| Transmission Oil | Every 12,000 km or 24 months | Replace. Capacity: 0.60 L. Drain when engine is warm. |
| Drive Chain | Regular inspection | Check slack and alignment, clean and lubricate regularly. |
| Autolube System | Regular inspection | Check pump operation and perform air bleeding as necessary. The YSR50 does not have a conventional engine oil filter. |