Large 20mm Ball Arm Extending 8.26 Inches for the Westin Adventure Mount System
The Westin WES10-21055 is a large 20mm ball arm mount at 8.26 inches, offering maximum reach within the Westin Adventure Mount modular ecosystem. WES10-21055 connects to any Adventure Mount base via the 20mm ball input and accepts any compatible device holder at the output ball end, providing the longest standard arm option in the system for situations requiring significant offset from the base mounting point to the device position.
Key Features
- Large 8.26-inch reach for maximum device positioning flexibility
- 20mm ball input and output interfaces
- Compatible with all Westin Adventure Mount bases and holders
- Adjustable ball socket for multi-axis positioning
- Lightweight construction
Specifications
| Detail | Value |
|---|---|
| Part Number | WES10-21055 |
| Type | Ball Arm Mount |
| Arm Length | 8.26 in. |
| Ball Interface | 20mm |
| System Compatibility | Westin Adventure Mount system |
What’s Included
- 1x WES10-21055 large 20mm ball arm mount (8.26 in.)
- Hardware
About Westin
Westin Automotive Products designs the Adventure Mount system as a fully modular, no-drill vehicle mounting platform. The 20mm ball interface is universal across all Adventure Mount components for complete mix-and-match flexibility.
FAQ
What is the WES10-21055?
The WES10-21055 is the Westin Adventure Mount large 20mm ball arm mount at 8.26 inches, providing maximum reach within the system for positioning a device holder far from the base mounting point.
Is WES10-21055 compatible with all Adventure Mount bases?
Yes. The WES10-21055 uses the standard 20mm ball interface and is compatible with all Adventure Mount vehicle-specific bases and device holders.
What is the actual arm length of WES10-21055?
The WES10-21055 is 8.26 inches, the longest standard arm option in the Westin Adventure Mount lineup.
Does WES10-21055 work alone?
No. A vehicle-specific Adventure Mount base is required. WES10-21055 connects to the base and accepts a device holder or adapter at the output end.
Can I stack WES10-21055 with other arm components?
Yes. The 20mm ball output of WES10-21055 accepts connector balls or additional arm sections, allowing extended configurations within the Adventure Mount system.
Is WES10-21055 universal?
Yes. WES10-21055 is a universal Adventure Mount accessory and is not vehicle-specific.
Does WES10-21055 include hardware?
Yes. Necessary mounting hardware is included.
What device holders are compatible with WES10-21055?
All Westin Adventure Mount phone holders, tablet holders, GoPro adapters, and AMPS adapters are compatible via the 20mm output ball.
Installation Instructions
- Install the vehicle-specific Adventure Mount base per its instructions
- Attach the WES10-21055 arm to the base ball socket and tighten lightly
- Connect the desired device holder to the arm output ball
- Adjust the arm and holder to the preferred position
- Tighten all ball socket locking mechanisms securely








