Arlen Ness Big Sucker Stage 1 Air Cleaner for M8 Softail Models

• Arlen Ness Big Sucker Stage 1 backing plate
• High-performance air filter
• Aluminum filter top plate
• Smooth Stage 1 air cleaner cover
• Installation hardware kit
• Installation instructions

Stage 1 High-Flow Intake Upgrade
Designed to increase airflow to the engine for improved horsepower, torque, throttle response, and overall performance.

Built for M8 Softail Performance
Engineered for Milwaukee-Eight Softail models, making it a strong intake upgrade for riders looking to improve engine breathing and performance.

Smooth Stage 1 Air Cleaner Cover
Includes a clean smooth-style air cleaner cover for a classic, performance-focused look that fits the M8 Softail platform well.

Available in Wrinkle Black or Chrome
Choose between a wrinkle black or chrome air cleaner cover to better match your engine finish and overall Softail build.

Increases Horsepower and Torque
Designed to help increase horsepower and torque by allowing the engine to breathe more freely compared to the factory air cleaner setup.

One-Piece Aluminum Backing Plate
Features a one-piece aluminum backing plate for strength, precision fitment, and a clean installation.

Aluminum Filter Top Plate
Includes an aluminum filter top plate for a refined appearance and secure filter assembly.

Improved Throttle Response
Increased airflow can help improve throttle response and overall engine feel, especially when paired with proper tuning and supporting modifications.

Clean Softail Style
Adds a polished, understated performance look without overpowering the factory lines of the bike.

Complete Installation Kit
Includes the backing plate, air filter, cover, top plate, hardware kit, and instructions for installation.

Fits:

• 2018–2024 Harley-Davidson M8 Softail models
• 2025+ Harley-Davidson M8 Softail models

Always confirm your exact year, model, engine generation, throttle body setup, and tuning requirements before ordering.

What does the Arlen Ness Big Sucker Stage 1 Air Cleaner do?
It increases airflow into the engine to support improved horsepower, torque, throttle response, and overall performance.

What models does this air cleaner fit?
This kit fits 2018–2024 M8 Softail models and 2025+ M8 Softail models.

Does this fit 2025+ M8 Softail models?
Yes. This air cleaner is available for 2025+ M8 Softail models. Be sure to select the correct fitment option.

Does this kit include the air cleaner cover?
Yes. This kit includes the smooth Stage 1 air cleaner cover.

What cover finishes are available?
This air cleaner is available with a wrinkle black or chrome air cleaner cover.

Does this kit include an air filter?
Yes. This kit includes a high-performance air filter.

What is the backing plate made from?
The kit features a one-piece aluminum backing plate for strength, precision fitment, and a clean installation.

Does this kit include a filter top plate?
Yes. This kit includes an aluminum filter top plate.

Will this increase horsepower and torque?
Yes. The Big Sucker Stage 1 is designed to increase airflow, which can help improve horsepower and torque.

Is tuning required?
Tuning may be recommended depending on your intake, exhaust, engine setup, and other modifications.

Is professional installation recommended?
Professional installation is recommended to ensure proper fitment, hardware torque, intake sealing, and tuning if needed.