



Big Sucker Stage I Air Filter by ARLEN NESS (manufacturer part number: 18-561) — a vintage-style intake kit with a black finish designed for Twin Cam touring and custom bikes. Engineered to provide clear engine breathing without peripheral additives, this Stage I module combines a single-piece black aluminium backplate and a reusable filter element for easy maintenance and a clean fit on the bike.
Suitable for Twin Cam Delphi EFI and Twin Cam CV carburettor engines (2001–2017). Common application examples: Harley-Davidson Dyna Wide Glide, Low Rider, and Fat Bob (1690 cc). Ideal for riders seeking a classic aesthetic and a clean, durable intake.