Ness-Tech Smooth Billet Stage II Big Sucker Air Cleaner Kit. Fits all 2006 Twin Cam models. Ness-Tech Product 18-810.
Source: Custom Chrome
Chrome billet outer cover available in three styles. Higher performance air filter flows 20% more that stage I version. All-in-one aluminum backing plate features built-in carb support. Breather tunnels at each head to decrease crankcase pressure. Includes the billet cover, backing plate, high-flow air filter, four chrome banjo bolts, and all necessary hardware.