Dynojet ATV Jet Kit for 2006-2009 Yamaha YFZ450
Take your performance to new heights with a Jet Kit for your ATV. 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 ATV.
Whether you’re rolling with a stock ATV 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 ATV’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 ATV.
STAGE 1 DETAILS
Perfect for ATVs 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 ATV, 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 ATVs with stock or mildly tuned engines using a well - designed aftermarket pipe with a modified airbox and a stock replacement air filter.