Ken's Factory External Vent Option Kit For The NXT Air Cleaner Kits Customize your ride with the NXT air cleaner kit! Traditional air cleaners circulate cylinder head pressure internally, but not this one. This kit takes a bold approach by venting head pressure externally, giving your bike a distinctive edge. Available in Black or Machined , the kits come complete with special bolts, washers, o-rings, and 1/8 NPT nipples. Crafted for use with a 5/16 hose (not included), or if you're feeling hands-on, experiment with a 1/8 NPT fitting for a personalized touch. Features: This kit vents head pressure externally Black or Machined kits include special bolts, washers, o-rings, and 1/8 NPT nipples Made for use with a 5/16 hose (not included) It is also possible to use 1/8 NPT fitting For NXT air cleaners only