The all new Big Sucker Stage I air cleaner for M8 engines adds new & improved features to the original industry leading performance intake. In addition to Arlen Ness's patented hidden breather backing plate technology, they've added an outer lip which wraps around the filter base resulting in a clean look while better securing and protecting the filter element.

Features:

• Smooth radius air inlet directs unobstructed air flow straight down the throttle body
• Aluminum filter top plate replaces the traditional stamped steel filter plate and has integrated filter-mounting studs which eliminates the need for additional filter mounting hardware
• High performance filters are made from black pre-oiled cotton for the best in airflow and filtration. Filter are washable and re-usable; filter re-charge kits are available separately
• 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 with the M8 engines by directing any excess breather oil back into the engine
• Hidden breather backing plate technology is a step up from the original system

Includes

• one-piece backing plate
• performance filter
• filter top
• gaskets
• cover
• all necessary hardware

A.R.B Compliant:

• ARB E.O. D-639-6

More Air Cleaner kits HERE.

⚡ FITMENT GUIDE

2024+ Touring and 2025+ Softail

Touring Models

✔ 2026 CVO Street Glide Limited (FLHXLSE)
✔ 2026 Street Glide Limited (FLHXL)
✔ 2026 Road Glide Limited (FLTRXL)
✔ 2026 CVO Street Glide ST (FLHXSTSE)
✔ 2026 Police Road Glide (FLTRXP)

✔ 2024–2026 Street Glide (FLHX)
✔ 2024–2026 Road Glide (FLTRX)

✔ 2023–2026 CVO Street Glide (FLHXSE)
✔ 2024–2026 CVO Road Glide ST (FLTRXSTSE)
✔ 2023–2025 CVO Road Glide (FLTRXSE)

✔ 2025 Street Glide Ultra (FLHXU)

Softail Models

✔ 2025–2026 Low Rider S (FXLRS)
✔ 2025–2026 Low Rider ST (FXLRST)
✔ 2025–2026 Fat Boy (FLFB)
✔ 2025 Fat Boy Gray Ghost (FLSTFI)
✔ 2025–2026 Heritage Classic (FLHC)
✔ 2025–2026 Street Bob (FXBB)
✔ 2025–2026 Breakout (FXBR)

Trike Models

✔ 2026 CVO Street Glide 3 Limited (FLHLTSE)
✔ 2026 Road Glide 3 (FLTRT)
✔ 2026 Street Glide 3 Limited (FLHLT)

2017-2023 M8 Touring & 2018-2024 Softail

✔ 2017–2023 Milwaukee-Eight Touring Models

• FLHT Electra Glide

• FLHR Road King

• FLHX Street Glide

• FLTRX Road Glide

• FLTRU Road Glide Ultra

• Harley-Davidson FL Trike Models

• excludes:

  ✘ 2023 CVO Street Glide (FLHXSE)
  ✘ 2023 CVO Road Glide (FLTRXSE)

✔ 2018–2024 Softail Models

Compatible with all Milwaukee-Eight Softail models

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