Made in the USA .......S&B custom air filters enjoy a unique filter element called Reemay made by Dupont which being man-made product features more evenly dispersed and finer filtration holes for improved filtration and constant airflow.

Filters can be run DRY or oiled but experience shows that running these filters DRY produces best performance as when oiled, the filter gradually dries out over a period of use and the carburation or carburvaries. If running filters DRY always protect the outside filter from rainfall to avoid one filter becoming soaked when bike is PARKED as this will affect startup carburation.

The filters are end sealed with a high lustre chrome end cap. Filters come in a range of size and filter volumes to handle all needs on modern street motorcycles and custom applications.

The rule is to seek out the diameter onto which the filter will fit and then get the largest filter possible into the allowable space.

After removing a standard airbox and fitting custom filters re-tuning of the jet size and pilot jet screw setting may need to be altered, this should be done by plug colour testing and using precision BRASS (not plastic) mainjets as available from our affiliate Company ABAX engineering, click here to review our listing on BRASS CARBURETOR CARBURETTOR MAINJETS

DIMENSION CHART

CONICAL TYPES PARALLEL TYPES FILTER NO. A B C D RC79 35 63 58 51 RC106 48 76 76 51 RC107 43 76 70 51 RC120 52.5 89 102 51 RC125 57 86 95 51 RC135 55 88 104 88 RC234 55 76 70 51 RC311 28 57 57 51 RC312 51 73 63 51 RC313 43 76 60 51 FILTER NO. A B C D RC17 40 89 38 89 RC34 44 114 38 114 RU99 (Special Norton Filter)   OVAL TYPES RC059 43 112 70 75 RC069 50 112 70 75 RC84 40 72 51 51 RC98 55 112 70 75