No Toil Air Filter Grade_20W50 With a vented design for

With a vented design for airflow

spring and washer

You can also find it by looking at the size designation of your X-SPR Pro

Perfect accessory to help with the bike's cleaning

No Toil Air Filter Grade_20W50 With a vented design forFOAM AIR FILTERS: NO TOIL manufactures the World's best 2 stage foam air filters. Using only the best flame laminated dual layer foam bonded with the highest quality glue they hand make each foam filter to stand up to the roughest and toughest of any style of riding or terrain. These filters, used with No Toil foam filter oil, provide the best air filtration system in the world! (Remember: NO TOIL oil washes clean in water and is 100% biodegradable;