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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 Kodiak 400 ATV (1993-2006)
The Yamaha Kodiak 400, produced from 1993 to 2006, established itself as a reliable and versatile ATV, ideal for utility tasks and trail riding. Throughout its production, it consistently featured a 401cc single-cylinder, 4-stroke engine, known for providing ample power for its intended use. A significant evolution occurred in 2000. Models from 1993 to 1999 were equipped with an air-cooled engine and a 5-speed transmission. From 2000 onwards, the Kodiak 400 received a major update, introducing an all-new liquid-cooled engine for quieter operation and increased power. This update also brought Yamaha's innovative Ultramatic™ transmission, offering superior engine braking and durability. Four-wheel-drive models from 2000 also benefited from the On-Command™ push-button 2WD/4WD system, along with upgraded hydraulic disc brakes and improved suspension. Q: How do I ensure I select the correct parts for my Kodiak 400? A: Due to significant changes in transmission and cooling systems, always use the year and trim selector on this page to find parts specifically designed for your ATV.
Q: Are parts interchangeable between early and later models? A: No, many components, especially for the engine and transmission, are not interchangeable between pre-2000 air-cooled models and post-2000 liquid-cooled Ultramatic models. Please use the selector.
Maintenance
| Component | Interval | Details |
| Engine Oil and Oil Filter | 50 hours, 800 km or once per season, whichever comes first. / 6 months | Check oil level every 10 hours. |
| Air Filter | Clean every 20-40 hours. Replace every 12 months or 100 hours. | Replace more frequently in dusty conditions. |
| Spark Plug | 100 hours | Inspect. |
| Belt (CVT Transmission) | 100 hours | Inspect. Replace at first sign of damage. |
| Coolant | 200 hours or 2 years | Change. |