Arlen Ness, 90° Monster Sucker air cleaner. No cover - Harley-Davidson Sportster Stage 1

Black anodized billet aluminum.

The Ness Monster Sucker air cleaner comes with the largest filter surface area of all aftermarket 90° air cleaners, which translates to: 'The best breathing 90° air cleaner on the market!'

It allows this filter to keep-up with air-demands from bone stock all the way up to massive horsepower spitting engines.

The air filter element is constructed from black oiled high flow cotton gauze filtering material.

The aluminum body is manufactured from precision forged billet aluminum and CNC machined to the Ness standard where perfection is absolute. Hidden patented internal breathers are used to provide efficient breathing combined with the cleanest looks. 

Fitment Guide 

Sportsters

91-22 XL Sportster (Excl. XR1200) (NU)
Harley-Davidson Sportster Custom XL1200C 2007-2019
Harley-Davidson Sportster Custom XL883C 2007, 2008, 2009
Harley-Davidson Sportster Forty-Eight Special XL1200XS 2018, 2019
Harley-Davidson Sportster Forty-Eight XL1200X 2010-2020
Harley-Davidson Sportster Iron XL1200NS 2018, 2019, 2020
Harley-Davidson Sportster Iron XL883N 2009-2020
Harley-Davidson Sportster Low/SuperLow XL883L 2007-2019
Harley-Davidson Sportster Low XL1200L 2007, 2008, 2009, 2010, 2011
Harley-Davidson Sportster Nightster XL1200N 2007-2012
Harley-Davidson Sportster Roadster XL1200CX 2016, 2017, 2018, 2019, 2020
Harley-Davidson Sportster Roadster XL1200R 2007, 2008
Harley-Davidson Sportster Roadster XL883R 2007-2012
Harley-Davidson Sportster Seventy-Two XL1200V 2012, 2013, 2014, 2015, 2016
Harley-Davidson Sportster SuperLow XL1200T 2014, 2015, 2016, 2017
Harley-Davidson Sportster XL883 2004-2009