box lid

[yamahahaha]

i have a k&n filter, fmf fac 4.1. run it lid off? on? or get a k&n lid

[mikeyucha5]

if you want to get the full power out of your bike run with the lid off. just make sure you get an outerware for your airfilter then get one to go over the airbox. the power change is beautiful afterwards. :D

[greenblood01]

I suggest an aftermarket intake such as an FCI, ESR, or Sparks with a foam filter. If you ride in much dust you won't like the K&N in the long run.

[Trxracr]

id get a UNI with no lid i had a pro design proflow with k&n on my old raptor with outerware and no lid it sucked in dirt and fried the rings ill never run another k&n