ARLEN NESS Big Sucker™ Stage I Air Filter Kit — Black, fits 2001–2017 Twin Cam Delphi EFI and 1999–2006 Twin Cam CV – 99-02, 04-05, 08, 13-17 Dyna, 02 Touring, 01-15 CVO, 00, 04-15 Softail

The Big Sucker™ Stage I air filter kit improves engine breathing and performance through hidden-breather technology and a radius inlet that maximizes unobstructed airflow.

• Each hidden breather is O-ringed at the heads and exits at the mouth of the injector or carburetor to provide efficient engine breathing and eliminate the need for external hoses or hardware.
• Radius air inlet provides maximum performance with unobstructed airflow.
• One-piece backing plate integrates hidden breather technology for a clean, compact installation.
• All necessary hardware and clear instructions are included for straightforward installation.
• Fitment: for 2001–2017 Twin Cam Delphi EFI and 1999–2006 Twin Cam CV carb models.

Designed for simple installation and reliable operation, this Stage I kit offers a direct upgrade to improve throttle response and engine efficiency.