K & N Air Filter - YZ250F/450F/FX YA-4518XD Fi2000R O² Standard Model Fuel Processor Dual bungs are standard on

Dual bungs are standard on this system

Mid-weight

tunes and adjusts your air/fuel ratio for peak performance instantaneously Can fine-tune the non-acceleration air/fuel curves using the Bluetooth® app Works with stock or modified engines

- Dyno Charts vary due to wide range of fitment

K & N Air Filter - YZ250F/450F/FX YA-4518XD Fi2000R O² Standard Model Fuel Processor Dual bungs are standard onSpecifically designed with special media and dry foam insert for maximum off road protection Engineered to provide increased horsepower and acceleration Unoiled foam pre filter is easy to clean and re use Filter element is pre oiled and ready to ride