Big Sucker™ Stage 1 Air Filter Kit - '01-'17 Twin Cam EFI & '99-'06 CV Carb - Black Carburetors & Intake Big Twin Parts Bottom mount using a male

Bottom mount using a male 3/8"-24 × 1" stud and nut

Torque cones can help restore lost performance when not at high RPMs

Riserless design

Unlike a standard socket

Accepts stock Harley Sportster oil tank filler caps (also available for purchase separately TC Bros

Big Sucker™ Stage 1 Air Filter Kit - '01-'17 Twin Cam EFI & '99-'06 CV Carb - Black Carburetors & Intake Big Twin Parts Bottom mount using a maleArlen Ness Big Sucker Stage 1 Air Filter Kit '01 '17 Twin Cam EFI & '99 '06 CV Carb Black Features a one piece aluminum backing plate carb support bracket with patented hidden breather technology and radius air inlet Breather passages exit at the mouth of the carburetor throttle body, creating a virtually closed loop system Kit includes high performance filter, backing plate and steel outer cover All necessary hardware and instructions are included