A50518 Big Sucker Stage I Luftfilter

Arlen Ness claims this is the best and simplest performance air cleaner kits for your Harley-period!

The Ness "Sucker" backing plate features a built-in carburetor support and built-in breather tunnels at each head to decrease crankcase pressure. Each tunnel exits at the mount of the carburetor to create a virtually closed-loop system. Breather features o-ring banjo bolt seals and a radiused intake manifold. No oil hoses, no oil fittings, no leaking and no mess! All kits include a "Big Sucker" aluminum backing plate, Team Ness High-Flow air filter, simple instructions and all necessary hardware. These kits are designed to be used with stock outer air filter covers with a center hole and can also be used with a Ness Stage I billet air filter cover.

Applications:
XL Evolution Sportster 1988-2022: Use kit E
XG Street 2015-2020: Use kit G

Dyna 1993-1998: Use kit C
Dyna 1999-2007: Use kit B
Dyna 2008-2017 96CI & 103CI: Use kit B
Dyna 2016-2017 110CI FXDLS Low Rider S: Use kit A

Softail 1993-1999: Use kit C
Softail 2000-2015 except 2008-2015 CVO & SE: Use kit B
Softail CVO & SE 2008-2015: Use kit A
Softail 2016-2017: Use kit A
Softail 2018-2024: Use kit H

Touring 1993-1998, carburated: Use kit C
Touring 1995-1998, Fuel Injected: Use kit D
Touring 1999-2007, carburated: Use kit B
Touring 1999-2001, Fuel Injected: Use kit D
Touring 2002-2007, Fuel Injected: Use kit B
Touring 2008-2013: Use kit A
Touring 2014-2016 (must use Ness Stage 1 air cleaner cover): Use kit A
Touring 107CI and 114CI 2017 to present, Touring 117CI 2018-2023: Use kit H

Trike 2009-2013: Use kit A
Trike 2014-2016 (must use Ness Stage 1 air cleaner cover): Use kit A
Trike 2017 to present: Use kit H

Twin Cam models with 58mm throttle body and Throttle By Wire: Use kit F