1. Product Overview
The Joker Machine Rain Sock is a water-repellent prefilter designed to protect 4-inch Joker Machine air cleaners equipped with K&N filters during wet weather conditions. It is manufactured in the USA.
- Water-repellent prefilter for riding in rainy weather.
- Compatible with all Joker Machine air cleaners utilizing 4-inch K&N filters.
- Features hook-and-loop attachment for straightforward installation and removal.
- Manufactured in the USA.
2. Installation Instructions
The Joker Machine Rain Sock is designed for easy installation and removal. Follow these steps for proper attachment:
- Ensure your Joker Machine air cleaner is equipped with a 4-inch K&N filter.
- Position the rain sock over the air cleaner, ensuring it fully covers the filter element.
- Secure the rain sock using its integrated hook-and-loop fastening system. Ensure it is firmly attached to prevent dislodgement during operation.

Figure 1: Joker Machine Rain Sock component, displaying its construction and hook-and-loop fasteners.

Figure 2: Rain Sock installed on an air cleaner, showing the angled fit.

Figure 3: Rain Sock installed on an air cleaner, showing the side profile and secure attachment.
3. Operating Instructions
Once installed, the rain sock functions as a protective barrier, repelling water from your air filter during wet riding conditions. This helps maintain optimal air filter performance and extends its lifespan by preventing water saturation.
The rain sock is intended for use during rain or wet conditions. It can be easily removed when not required, for example, during dry weather riding or for cleaning.
4. Care and Maintenance
To ensure the longevity and effectiveness of your Joker Machine Rain Sock, follow these guidelines:
- Cleaning: If the rain sock becomes dirty, gently hand wash it with mild soap and cold water. Avoid harsh detergents or abrasive cleaning methods.
- Drying: Allow the rain sock to air dry completely before reinstallation or storage. Do not machine dry.
- Inspection: Periodically inspect the rain sock for any signs of wear, tears, or damage to the hook-and-loop fasteners. Replace if significant damage is observed to ensure continued protection.
5. Troubleshooting
This section addresses common concerns regarding the Joker Machine Rain Sock.
- Rain Sock Does Not Stay On: Ensure the hook-and-loop fasteners are clean and securely attached around the air cleaner. Verify that the rain sock is correctly sized for your 4-inch Joker Machine air cleaner with a K&N filter.
- Water Penetration: Confirm the rain sock is properly installed and fully covers the air filter. Inspect for any tears or damage that might compromise its water-repellent properties.
6. Product Specifications
| Feature | Detail |
|---|---|
| Brand | Joker Machine |
| Model Name | Rain Sock for Joker Air Cleaner - 4in. |
| Model Number | 10-210-4B |
| Item Weight | 0.352 ounces |
| Product Dimensions | 6 x 6 x 6 inches |
| Compatibility | Joker Machine air cleaners with 4-inch K&N filters |
| Attachment Method | Hook-and-loop |
| Manufacturing Origin | USA |
7. Warranty Information
Specific warranty details for the Joker Machine Rain Sock (Model 10-210-4B) are not provided in the available product information. Please contact Joker Machine directly or refer to your purchase documentation for warranty terms and conditions.
8. Customer Support
For further assistance or inquiries regarding your Joker Machine Rain Sock, please contact the manufacturer, Joker Machine. Contact information may be available on their official website or through your product retailer.





