MCS-590781 - It greatly helps; when trying to maximize airflow through a filter; to have a large filtering area. But building a huge filter was a no go; it had to be small and very effective. This is where the Arlen Ness design artists started. Adding the inside surfa

Fitment:
Delphi inj.: 01-15 Softail; 04-17 Dyna (excl. 2017 FXDLS); 02-07 FLT/Touring (NU)