Minimalist Race Aesthetics Meets High-Flow Milwaukee-Eight Performance

Incorporate aggressive, raw-racer styling into your modern Harley-Davidson V-Twin with the Vance & Hines VO2 Cage Fighter Air Cleaner Kit. Designed for 2023.5 through 2026 Harley-Davidson Touring models (including Street Glide, Road Glide, CVOs) and 2025–2026 Softail platforms, this high-performance intake replaces the bulky factory air box with an open, skeletal faceplate housing a high-capacity washable filter element.

Engineered to maximize intake velocity, the VO2 Cage Fighter incorporates an oversize backing plate and Vance & Hines’ proprietary Force Velocity Stack. By smoothing out incoming airflow into the electronic throttle body, this kit yields measurable torque and horsepower increases across the entire RPM range.

Technical Specifications & Product Details

Feature / Metric	Product Specification	Rider Benefit
Brand / Manufacturer	Vance & Hines (Made in USA)	Precision V-Twin performance engineering and robust build quality
Filter Element Type	High-Flow Washable & Reusable Synthetic/Cotton Gauze	Maximum filtration efficiency with long-term reusable cost savings
Backing Plate & Venturi	Force Velocity Stack Billet Inlet Backing Plate	Channels smooth, high-velocity air into the throttle body for improved throttle response
Faceplate Style	Laser-Cut Stainless Steel Cage Cover	Delivers a sleek, skeletal industrial race look that exposes the filter media
Available Finishes	Chrome (71105), Stainless Black (41106), Stainless Brushed (71106)	Seamless visual integration with chrome, darked-out, or brushed hardware themes

Airflow Dynamics & Engine Performance

### Force Velocity Stack Technology

Standard OEM air boxes feature sharp angles and baffle restrictions that hinder intake volume, causing air turbulence at higher throttle positions. The VO2 Cage Fighter utilizes a large-bore backing plate paired with a integrated Force Velocity Stack. This design draws a higher volume of clean air and streamlines intake velocity directly into the Milwaukee-Eight intake track, improving throttle response and high-RPM power output.

### Washable High-Capacity Filter Element

The kit features a pre-oiled, high-capacity filter element. Unlike disposable paper filters that clog over time, this synthetic gauze element can be easily washed, re-oiled, and reused for thousands of miles, ensuring consistent peak performance.

Vehicle Compatibility Guide

The VO2 Cage Fighter (Part #41106 Black / #71105 Chrome / #71106 Brushed) is engineered for late-model Harley-Davidson Milwaukee-Eight Touring and Softail motorcycles equipped with factory electronic throttle bodies:

### Harley-Davidson Touring Models (2023.5–2026)

• Street Glide / CVO Street Glide: FLHX, FLHXSE (2023.5–2026)
• Road Glide / CVO Road Glide / ST: FLTRX, FLTRXSE, FLTRXSTSE (2023.5–2026)
• Street Glide Ultra / Road Glide Limited: FLHXU, FLTRK (2024–2026)
• Road Glide 3 Trike: FLTRT (2023.5–2026)

### Harley-Davidson Softail Models (2025–2026)

• Street Bob 114 / Softail Standard: FXBBS, FXST (2025–2026)
• Low Rider S / Low Rider ST: FXLRS, FXLRST (2025–2026)
• Fat Boy 114 / Breakout 117: FLFBS, FXBR (2025–2026)
• Heritage Classic 114: FLHCS (2025–2026)

Step-by-Step DIY Installation Guide

Installing the Vance & Hines VO2 Cage Fighter air cleaner takes approximately 30 to 45 minutes using standard shop tools.

### Required Tools

• Hex key / Allen wrench set (3/16″, 5/32″)
• Torx key set (T27 / T30)
• 3/8″ Drive Ratchet with sockets
• Medium-strength thread locker (Blue Loctite)
• Clean rag and throttle body cleaner

### Step 1: Removal of Factory Air Box

Ensure the motorcycle ignition is turned off. Remove the outer air cleaner cover bolt and remove the cover. Unbolt the stock filter element and remove the backing plate assembly, disconnecting the breather tubes connected to the cylinder heads. Gently wipe clean the face of the throttle body using a clean cloth.

### Step 2: Installing the Backing Plate & Breathers

Apply blue thread locker to the included backing plate bolts. Position the Vance & Hines aluminum backing plate against the throttle body inlet along with the provided gasket. Install the cylinder head breather bolts and torque all fasteners evenly to manufacturer specifications.

### Step 3: Mounting Filter Element & Cage Faceplate

Place the washable high-flow filter element over the velocity stack ridge. Position the laser-cut stainless steel Cage Fighter cover onto the filter front. Secure the outer cover with the provided countersunk hex head screws treated with thread locker, tightening firmly in a cross-pattern.

Frequently Asked Questions

### Do I need to re-tune my motorcycle after installing this kit?

While the Milwaukee-Eight ECM can adapt to minor airflow changes, installing a high-flow intake significantly increases oxygen volume into the engine. To unlock maximum horsepower gains and maintain optimal air-fuel ratios, installing a tuner like the Vance & Hines Fuelpak FP4 is highly recommended.

### How do I clean and maintain the filter element?

The reusable filter element should be inspected every 5,000 miles. Clean it using an aftermarket V-Twin washable air filter cleaner kit, rinse thoroughly with low-pressure water from the inside out, allow it to air dry completely, and re-apply filter oil before reinstalling.

### Order Your Vance & Hines VO2 Cage Fighter Today

Transform the performance and aggressive styling of your 2023–2026 Harley-Davidson Touring or Softail motorcycle. Order the Vance & Hines VO2 Cage Fighter Air Cleaner Kit today with fast shipping!