Fits KTM 640 Adventure with locking cap as shown in the photo.  Opening size 1.5″ or 40mm (approx).

Flange size 43mm
Neck size 37mm
Filter size 4.5″ x 8″
Filter bag is offset from the neck

(Photo may not represent your filler nozzle)

Guglatech includes a special slip-in adaptor that fits under the cap to allow it to close.


Special fuel neck prefilter designed to be mounted inside the original fuel cap, simple drop-in easy to insert and extract, no further modifications or mountings.

Installation of this filter couldn’t be any easier… just remove the cap, insert the filter, and screw down the cap.

Expedition media, XL+ 600 square cm of filtering surface, simply mounting and fast refueling, washable and long lasting.

HDM3D media will allow a very good protection of the fuel pump and main filter, Acquastop separating water from fuel during refueling.

For EFI systems, the original system has a strainer working between 40 and 60 microns, using a nylon mesh that’s totally inadequate to protect the fuel pump.  Carburetor bike will be protected from any contaminants and water during refueling.

This filtration level will both preserve the fuel pump and prolong the original fuel filter.

Double-check your bike’s make, model, year, gas tank design, filler nozzle, etc. before ordering. 
Take careful measurements of your filler nozzle and confirm for proper fitment. (see measurements of filter above).
If you order the wrong filter you’re responsible for any shipping fees needed to replace it with the proper filter, plus any price differences.
Filters that have been immersed in gas (or are not in like-new condition) are NOT eligible for return or refund.