ATV Jet Kit for 1999-2002 Polaris Expedition 425

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.