Air Cleaner Kits

Arlen Ness #18-457 - Big Sucker Stage-1 - Natural - M8

Accepts stock OEM outer cover.FeaturesEach hidden breather is o-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through the proprietary breather tubesHidden Breather backing plate technology is a step...

Arlen Ness #18-458 - Big Sucker Stage-1 - Chrome - M8

Accepts stock OEM outer cover.FeaturesEach hidden breather is o-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through the proprietary breather tubesHidden Breather backing plate technology is a step...

Arlen Ness #18-459 - Big Sucker Stage-1 - Black - M8

Accepts stock OEM outer cover.FeaturesEach hidden breather is o-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through the proprietary breather tubesHidden Breather backing plate technology is a step...

Arlen Ness #18-498 - Big Sucker™ Air Filter Kit - Natural - Stage I

Big Sucker™ Air Filter Kit - Natural - Stage IFeaturesEach hidden breather is o-ringed at the heads and exits at the mouth of the injector/carb to provide efficient engine breathing, eliminating the need for any external hoses or hardwareRadius air inlet...

Arlen Ness #18-505 - Big Sucker™ Air Filter Kit - Natural - Stage I

Accepts Arlen Ness® Stage I round covers only.For '01-17' Twin Cam Delphi EFI and Twin Cam CV carb models.FeaturesEach hidden breather is O-ringed at the heads and exits at the mouth of the injector/carb to provide efficient engine breathing, eliminating...

Arlen Ness #18-507 - Big Sucker™ Air Filter Kit - Chrome - Stage I

Accepts Arlen Ness® Stage I round covers only.FeaturesEach hidden breather is O-ringed at the heads and exits at the mouth of the injector/carb to provide efficient engine breathing, eliminating the need for any external hoses or hardwareStandard red...

Arlen Ness #18-510 - Big Sucker™ Air Filter Kit - Natural - Stage I

Accepts OEM Covers.FeaturesEach hidden breather is o-ringed at the heads and exits at the mouth of the injector/carb to provide efficient engine breathing, eliminating the need for any external hoses or hardwareRadius air inlet provides maximum...

Arlen Ness #18-511 - Big Sucker™ Air Filter Kit - Natural - Stage II

Accepts Arlen Ness® Stage 2 custom covers.Will NOT accept factory air cleaner covers.FeaturesEach hidden breather is o-ringed at the heads and exits at the mouth of the injector/carb to provide efficient engine breathing, eliminating the need for any...

Arlen Ness #18-512 - Big Sucker™ Air Filter Kit - Chrome - Stage I

Accepts OEM Covers.FeaturesEach hidden breather is o-ringed at the heads and exits at the mouth of the injector/carb to provide efficient engine breathing, eliminating the need for any external hoses or hardwareRadius air inlet provides maximum...

Arlen Ness #18-560 - Big Sucker™ Air Filter Kit - Black - Stage I

Accepts Arlen Ness® Stage I round covers only.FeaturesEach hidden breather is O-ringed at the heads and exits at the mouth of the injector/carb to provide efficient engine breathing, eliminating the need for any external hoses or hardwareStandard red...

Arlen Ness #18-561 - Big Sucker™ Air Filter Kit - Black - Stage I

Accepts Arlen Ness® Stage I round covers only.For '01-17' Twin Cam Delphi EFI and Twin Cam CV carb models.FeaturesEach hidden breather is O-ringed at the heads and exits at the mouth of the injector/carb to provide efficient engine breathing, eliminating...

Arlen Ness #18-740 - Big Sucker™ Stage I Air Filter Kit - Black

Big Sucker™ Stage I Air Filter Kit - BlackFeaturesOne-Piece aluminum backing plate with hidden breather technologyEach hidden breather is O-ringed at the heads and exits inside the mouth of the throttle body for a virtually closed loop system,...

Arlen Ness #18-741 - Big Sucker™ Stage I Air Filter Kit - Black

For '01-'17 Twin Cam Delphi EFI and '99-'06 Twin Cam CV carb models.FeaturesOne-Piece aluminum backing plate with hidden breather technologyEach hidden breather is O-ringed at the heads and exits inside the mouth of the throttle body for a virtually...

Arlen Ness #18-742 Big Sucker Stage I Air Filter Kit - Stainless Steel

Big Sucker Stage I Air Filter Kit — Brushed One-Piece aluminum backing plate with hidden breather technology Each hidden breather is O-ringed at the heads and exits inside the mouth of the throttle body for a virtually closed loop system, eliminating...

Arlen Ness #18-743 Big Sucker Stage I Air Filter Kit - Brass

Big Sucker Stage I Air Filter Kit — Brass One-Piece aluminum backing plate with hidden breather technology Each hidden breather is O-ringed at the heads and exits inside the mouth of the throttle body for a virtually closed loop system, eliminating the...

Arlen Ness #18-744 - Big Sucker™ Stage I Air Filter Kit - Black

Will Fit '88-'90 models; breather system is not applicable for these model years.For '91-'22 XL models with CV carb or Delphi EFI.FeaturesOne-Piece aluminum backing plate with hidden breather technologyEach hidden breather is O-ringed at the heads and...

Arlen Ness #18-750 - Big Sucker™ Stage I Air Filter Kit - Black

Big Sucker™ Stage I Air Filter Kit - BlackFeaturesOne-Piece aluminum backing plate with hidden breather technologyEach hidden breather is O-ringed at the heads and exits inside the mouth of the throttle body for a virtually closed loop system,...

Arlen Ness #18-751 - Big Sucker™ Stage I Air Filter Kit - Black

For '01-'17 Twin Cam Delphi EFI and '99-'06 Twin Cam CV carb models.FeaturesOne-Piece aluminum backing plate with hidden breather technologyEach hidden breather is O-ringed at the heads and exits inside the mouth of the throttle body for a virtually...

Arlen Ness #18-752 - Big Sucker™ Stage I Air Filter Kit - Stainless Steel

Big Sucker™ Stage I Air Filter Kit - Stainless SteelFeaturesOne-Piece aluminum backing plate with hidden breather technologyEach hidden breather is O-ringed at the heads and exits inside the mouth of the throttle body for a virtually closed loop system,...

Arlen Ness #18-753 - Big Sucker™ Stage I Air Filter Kit - Stainless Steel

For '01-'17 Twin Cam Delphi EFI and '99-'06 Twin Cam CV carb models.FeaturesOne-Piece aluminum backing plate with hidden breather technologyEach hidden breather is O-ringed at the heads and exits inside the mouth of the throttle body for a virtually...

Arlen Ness #18-754 - Big Sucker™ Stage I Air Filter Kit - Black

Will Fit '88-'90 models; breather system is not applicable for these model years.For '91-'22 XL models with CV carb or Delphi EFI.FeaturesOne-Piece aluminum backing plate with hidden breather technologyEach hidden breather is O-ringed at the heads and...

Arlen Ness #18-755 - Big Sucker™ Stage I Air Filter Kit - Chrome

Big Sucker™ Stage I Air Filter Kit - ChromeFeaturesOne-Piece aluminum backing plate with hidden breather technologyEach hidden breather is O-ringed at the heads and exits inside the mouth of the throttle body for a virtually closed loop system,...

Arlen Ness #18-756 - Big Sucker™ Stage I Air Filter Kit - Chrome

For '01-'17 Twin Cam Delphi EFI and '99-'06 Twin Cam CV carb models.FeaturesOne-Piece aluminum backing plate with hidden breather technologyEach hidden breather is O-ringed at the heads and exits inside the mouth of the throttle body for a virtually...

Arlen Ness #18-758 Big Sucker Stage I Air Filter Kit - Brass

Big Sucker Stage I Air Filter Kit — Brass One-Piece aluminum backing plate with hidden breather technology Each hidden breather is O-ringed at the heads and exits inside the mouth of the throttle body for a virtually closed loop system, eliminating the...