



The Big Sucker Air Filter Kit Metacarpal Reinforcement ARLEN NESS (Stage 1) offers a vintage look and a refined finish for touring and classic customs. Designed to fit M8 cylinder heads, this kit combines a rounded aesthetic and CNC machined aluminium "metacarpal reinforcement" with carefully studied technical elements: an O-ring at the cylinder head, proprietary breather tubes, and a ventilation system that redirects excess breather oil back to the engine.
The concealed ventilation plate technology is an evolution of the original system for a clean integration on the housings. The assembly maintains a sleek and refined appearance, suitable for Harley Davidson Softail and touring customs seeking a vintage yet technical look.
Common compatibilities: particularly suitable for Harley Davidson models FXLRST, FXLRS, and FXBR 1923 (Softail 1923 cc, 2024).
Manufacturer reference: 18-342