Arlen Ness 18-306 Smooth Stage 1 Big Sucker™ For Milwaukee-Eight®, Black wallet chain The patented hidden breather backing

The patented hidden breather backing plate is o-ringed at the heads and exits inside the mouth of the throttle body for a virtually closed loop system

this patch displays the Harley-Davidson® signature with the operative word MOTORCYCLES within an oval flanked by wings

18-up Softail™ applications are available for driver & passenger

When you appreciate the context of the two-cylinder piston engine design

Arlen Ness 18-306 Smooth Stage 1 Big Sucker™ For Milwaukee-Eight®, Black wallet chain The patented hidden breather backingArlen Ness 18 306 The new Big Sucker Stage 1 performance intake for Milwaukee Eight (M8) engines adds new features to the original industry leading air cleaner. The new patent pending hidden breather system is o ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary shooter tubes Smooth Stage 1 Cover Increases Horsepower & Torque Eliminates Oil Blow bye Issues Associated with M8