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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 YZ250F Dirt Bike (2001-2026)
The Yamaha YZ250F is a renowned motocross motorcycle, produced from 2001 to 2026. It consistently features a 249cc liquid-cooled, DOHC, four-stroke single-cylinder engine, known for its performance and reliability on the track. Over its production run, the YZ250F has undergone several significant evolutions. Key milestones include the transition from a steel to an all-new aluminum frame in 2006, and a major overhaul in 2014 introducing a new chassis and a fuel-injected engine with a reversed cylinder head design. Further refinements in 2019 and 2021 brought more agile chassis, updated cylinder heads, and enhanced durability. While the core engine displacement remained constant, these updates significantly improved handling, power delivery, and overall performance. Special editions, such as the Monster Energy Yamaha Racing Edition, have also been offered, primarily distinguished by graphics and color schemes. FAQ:
Q: How can I ensure parts fit my YZ250F?
R: Use the year and edition selector at the top of the page to find parts specific to your model.
Maintenance
| Component | Interval | Details |
| Engine Oil | 5 to 10 hours | 5 hours for aggressive/race-level riding, 10 hours for recreational riding. For the 2005 model, 10 hours or once a month. |
| Oil Filter | Every oil change or every 2-3 oil changes | For 2019-2023 models, 15 hours. Some riders replace with every oil change. |
| Air Filter | 2 to 15 hours | 2-5 hours for aggressive/dusty conditions, 15 hours for recreational riding. Inspection and cleaning recommended every ride. |
| Spark Plug | Regular inspection | |
| Coolant | Every 2 years | For the 2024 model. Check level regularly. |
| Valve Inspection/Adjustment | 10 to 60 hours | 10-30 hours for aggressive/race-level riding, 20-60 hours for recreational riding. For the 2020 model, 30 hours for both styles. |
| Top-End Inspection (Piston, Rings, Cylinder) | 20 to 60 hours | 20-30 hours for aggressive/race-level riding, 40-60 hours for recreational riding. |
| Bottom-End Inspection (Crankshaft, Bearings) | 40 to 120 hours | 40-60 hours for aggressive/race-level riding, 80-120 hours for recreational riding. |