K & N Air Filter - Outlander BD-6506 VX-Pro4 Block Helmet The angled design also reduces

The angled design also reduces the effect of centrifugal force on the valve core

The adapter is a 17-4 heat treated steel that is treated to a H900 spec

Features advanced acoustical tuning technologies for deep rumbling sounds 4" round muffler front expands to 4

making it easier to get the helmet on and off yet remains secure with the FCS2 cheek pads

K & N Air Filter - Outlander BD-6506 VX-Pro4 Block Helmet The angled design also reducesFits directly into OEM airbox with application specific Sealing Bead to ensure a precise fit Fuel management modifications are not required for increased performance Pleated media provides a large filtration area offering long service intervals Designed to provide increased performance Made in the U. S. A.