K & N Air Filter - YZ250F/450F/FX YA-4518XD Fi2000R O² Standard Model Fuel Processor - Dyno Charts vary due

- Dyno Charts vary due to wide range of fitment

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

Choose MGP II slip-ons for a classic stainless steel shell

5 lambda bungs

Sold as right side cover only (see separate listing for left side)

K & N Air Filter - YZ250F/450F/FX YA-4518XD Fi2000R O² Standard Model Fuel Processor - Dyno Charts vary dueSpecifically 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