Fuel & Air System

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 #50-337 - Big Sucker™ Stage I Air Filter Kit - Black

For '93-'99 Evolution Big Twin models with CV carb.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...

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 #50-516 - Big Sucker™ Air Filter Kit - Chrome - Stage I

For '93-'99 Evolution Big Twin models with CV carb.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...

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 #50-572 - Big Sucker™ Air Filter Kit - Black - Stage I

For '93-'99 Evolution Big Twin models with CV carb.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...

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 #50-837 - Big Sucker™ Stage I Air Filter Kit - Black

For '93-'99 Evolution Big Twin models with CV carb.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...

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...

Arlen Ness #50-841 - Big Sucker™ Stage I Air Filter Kit - Gloss 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 #50-844 - Big Sucker™ Stage I Air Filter Kit - Gloss 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 #50-845 - Big Sucker™ Stage I Air Filter Kit - Chrome

Big Sucker™ Stage I Air Filter Kit - ChromeFeaturesEach 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 #50-846 - 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 #50-847 - Big Sucker™ Stage I Air Filter Kit - Chrome

For '93-'99 Evolution Big Twin models with CV carb.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...

Arlen Ness #50-849 - 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 #50-938 - Replacement Air Filter - Inverted Series

Replacement Air Filter - Inverted SeriesFeaturesPre-oiled filter element is encapsulated in a stainless steel jacket for the ultimate in style and durabilityFeatures an inverted filter top and perimeter flow designFilter is water resistant eliminating...

Arlen Ness #600-000 - Clear Tear Air Cleaner Kit - Orange

Clear Tear Air Cleaner Kit - OrangeFeaturesBreather design is O-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary shooter tubesRadius window can be installed in both the front or...