K&N Performance Air Filters

K&N High Flow Air Filter

Yesterday afternoon UPS delivered the K&N High-Flow air filter from Nfield Gear. I wish they would have delivered it a little earlier in the week because at least I would have had a chance to test it out.  The temperatures have dropped to the low 30s today and they are forecast to remain that way for quite a few days.

Regardless of all that, the filter got installed as soon as I had it on hand.  It is a rather easy task.  The filter is in the box on the starboard side of the bike.  The older filter boxes were attached with screws but in the newer models there is simply a bolt and a 13 mm nut holding the box in place.  Once the nut is removed the box has to be worked out around the key latch and a bolt and nut that protrude from the lower inside of the filter housing.  The OEM filter is held in place by a black metal plate that in my case had fused with the OEM filter.  I had to use a screwdriver to separate the filter from the metal plate.

The easiest way to replace the filter is to lay it on to the filter box and then place everything together into the filter container and move it around until the bolt falls into the metal plate hole and the filter box hole.  After that is a simple matter to reattach the washer and nut to the outside of the filter box.

I commute on the Bullet yesterday morning and took it to the dentist's office in Newtown Square for my afternoon appointment.  After replacing the filter I took a quick spin around my subdivision just to make sure everything was good.  Not a big ride but it appears to me like there is a definite improvement on performance just by changing this filter.

Part numbers from Nfield Gear.

Filter housing on starboard side of bike.

Filter Box held in place by 13mm nut.

OEM filter held in place by metal plate.

K&N High-Flow air filter.