Arlen Ness Monster Sucker 10 Gauge Air Cleaner - 81-030 For Harley Motorcycles 2017-2025 Model_18-Up Softail and spring washers

and spring washers

FXDRS114 models requires replacing the OEM exhaust due to interference with the right rear slider

Depending on the exhaust system used

2:1 Units Kit Riding Style Street

Arlen Ness Monster Sucker 10 Gauge Air Cleaner - 81-030 For Harley Motorcycles 2017-2025 Model_18-Up Softail and spring washersFeatures Features Big Sucker hidden breather technology and more filter surface area for maximum performance Hidden breathers are O ringed at the heads and exit out the mouth of the throttle body to provide efficient engine breathing, eliminating the need for any external hoses or hardware Filter features a built in inverted top to pull in air not only from all sides of the filter but also from the front, which results in more performance gaining