ARLEN NESS Performance Air Filter Kit - Stage II - Contrast Cut 600-186

Factory air filters restrict breathing on your M8, leaving horsepower on the table. The ARLEN NESS Stage II Performance Air Filter Kit delivers measurable gains—up to 3 hp on stock displacement and 5 hp on 124ci big bores—while improving throttle response and engine efficiency. With over 50% more filter surface area than OEM oval designs and CNC-machined billet components, this is genuine performance backed by dyno data, not marketing claims.

Built from high-flow, pre-oiled cotton media and finished in contrast-cut billet aluminum, the Stage II integrates seamlessly into your engine bay without sacrificing legroom or requiring fabrication—it's a straightforward bolt-on upgrade that adds style alongside substance.

• High-flow cotton media
• Pleated design, dual intake
• CNC-machined billet aluminum
• 50%+ greater surface area
• Up to 3 hp (stock M8)
• Up to 5 hp (124ci M8)
• Contrast-cut finish included
• Bolt-on installation
• No leg room reduction
• Includes cover, spacers, clamps
• Four mounting bolts included
• Dyno-tested performance gains