Big Sucker™ Stage II Air Filter Kit - Chrome Features a one-piece aluminum backing plate/carb support bracket with hidden breather technology, Breather passages exit at the mouth of the carburetor/throttle body, creating a virtually closed-loop system, Eliminates the need for...

Big Sucker™ Stage II Air Filter Kit - Chrome Features a one-piece aluminum backing plate/carb support bracket with hidden breather technology, Breather passages exit at the mouth of the carburetor/throttle body, creating a virtually closed-loop system, Eliminates the need for...

Big Sucker™ Stage II Air Filter Kit - Wrinkle Black Features a one-piece aluminum backing plate/carb support bracket with hidden breather technology, Breather passages exit at the mouth of the carburetor/throttle body, creating a virtually closed-loop system, Eliminates the need...

Big Sucker™ Stage I Air Filter Kit - Chrome 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,...

Big Sucker™ Stage I Air Filter Kit - Chrome 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,...

Big Sucker™ Air Filter Kit - Black - Stage I Each 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 hardware,...

Big Sucker™ Air Filter Kit - Black - Stage I Each 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 hardware,...

Big Sucker™ Stage I Air Filter Kit - Chrome 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,...

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

Big Sucker™ Air Filter Kit - Black - Stage I Each 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 hardware,...

Big Sucker™ Stage I Air Filter Kit - Gloss Black Each 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 hardware,...

Replacement Big Sucker Stage 1 Air Filter - Sportster Replacement and optional air filter for Big Sucker Stage 1 air filter kit

Big Sucker™ Stage 1 Air Filter Kit - Chrome Each breather is O-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary breather tubes, Breathing system eliminates oil issues associated...

Big Sucker™ Stage 1 Air Filter Kit - Black Each breather is O-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary breather tubes, Breathing system eliminates oil issues associated...

Big Sucker™ Stage 1 Air Filter Kit - Black Each breather is O-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary breather tubes, Breathing system eliminates oil issues associated...

Big Sucker™ Stage 1 Air Filter Kit - Black Each breather is O-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary breather tubes, Breathing system eliminates oil issues associated...

Big Sucker™ Stage 1 Air Filter Kit - Chrome Each breather is O-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary breather tubes, Breathing system eliminates oil issues associated...

Big Sucker™ Stage 1 Air Filter Kit - Black Each breather is O-ringed at the heads, passes through the backing plate and exits inside the mouth of the throttle body through proprietary breather tubes, Breathing system eliminates oil issues associated...

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,...

Big Sucker™ Stage I Air Filter Kit - Black 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,...

Big Sucker™ Stage I Air Filter Kit - Black 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,...

Big Sucker™ Stage I Air Filter Kit - Chrome 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,...

Big Sucker™ Stage II Air Filter Kit - Chrome Features a one-piece aluminum backing plate/carb support bracket with hidden breather technology, Breather passages exit at the mouth of the carburetor/throttle body, creating a virtually closed-loop system, Eliminates the need for...

Big Sucker™ Stage II Air Filter Kit - Wrinkle Black Features a one-piece aluminum backing plate/carb support bracket with hidden breather technology, Breather passages exit at the mouth of the carburetor/throttle body, creating a virtually closed-loop system, Eliminates the need...