Fuel & Air

Arlen Ness #50-331 - 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 #50-334 - Big Sucker™ Stage I Air Filter Kit - Chrome

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.FeaturesEach hidden breather is O-ringed at the heads and exits at the mouth of the injector/carb to provide efficient...

Arlen Ness #50-335 - Big Sucker™ Stage I Air Filter Kit - Wrinkle Black

Big Sucker™ Stage I Air Filter Kit - Wrinkle BlackFeaturesEach 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...

Arlen Ness #50-336 - Big Sucker™ Stage I Air Filter Kit - Wrinkle 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 #50-339 - Big Sucker™ Stage I Air Filter Kit - Wrinkle 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.FeaturesEach hidden breather is O-ringed at the heads and exits at the mouth of the injector/carb to provide efficient...

Arlen Ness #50-514 - Big Sucker™ Air Filter Kit - Chrome - Stage I

Accepts Arlen Ness® Stage 1 Custom Covers.Accepts most factory single-bolt air cleaner covers (check for proper fitment, factory cover specific fitment air cleaner kits are available).FeaturesEach hidden breather is o-ringed at the heads and exits at the...

Arlen Ness #50-515 - 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 #50-518 - Big Sucker™ Air Filter Kit - Chrome - Stage I

Will fit '88-'90 models also; breather system is not applicable for these model years.Accepts Arlen Ness® Stage 1 Custom Covers.Accepts most factory single-bolt air cleaner covers (check for proper fitment, factory cover specific fitment air cleaner kits...

Arlen Ness #50-570 - Big Sucker™ Air Filter Kit - Black - Stage I

Accepts Arlen Ness® Stage 1 Custom Covers.Accepts most factory single-bolt air cleaner covers (check for proper fitment, factory cover specific fitment air cleaner kits are available).FeaturesEach hidden breather is o-ringed at the heads and exits at the...

Arlen Ness #50-571 - Big Sucker™ Air Filter Kit - Black - 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 #50-574 - Big Sucker™ Air Filter Kit - Black - Stage I

Will fit '88-'90 models also; breather system is not applicable for these model years.Accepts Arlen Ness® Stage 1 Custom Covers.Accepts most factory single-bolt air cleaner covers (check for proper fitment, factory cover specific fitment air cleaner kits...

Arlen Ness #50-820 - Big Sucker™ Stage II Air Filter Kit - Wrinkle Black

For '01-'17 Twin Cam Delphi EFI and '99-'06 Twin Cam CV carb models.FeaturesFeatures a one-piece aluminum backing plate/carb support bracket with hidden breather technologyBreather passages exit at the mouth of the carburetor/throttle body, creating a...

Arlen Ness #50-836 - Big Sucker™ Stage I Air Filter Kit - Gloss Black

For '01-'17 Twin Cam Delphi EFI and '99-'06 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 the need for any external hoses or...

Arlen Ness #50-838 - Big Sucker™ Stage I Air Filter Kit - Gloss Black

Big Sucker™ Stage I Air Filter Kit - Gloss 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 #50-840 - Big Sucker™ Stage I Air Filter Kit - Gloss Black

Big Sucker™ Stage I Air Filter Kit - Gloss BlackFeaturesEach 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...