Industrial 21-5544 Round Security Key Ignition Switch

Description:

The Tucker Rocky 21-5544 Biker's Choice round security key ignition switch is used in Harley-Davidson motorcycle ignition and electrical control systems. Commonly installed on Harley-Davidson FX, XL Sportster, FXR, and Dyna models requiring replacement ignition switches. Motorcycle technicians, repair shops, and owners use this switch for repair, replacement, restoration, and upgrading worn ignition components.

Applications:

The Tucker Rocky 21-5544 Biker's Choice round security key ignition switch is designed to provide reliable key-controlled electrical switching for Harley-Davidson motorcycles. Its 3-wire configuration and three-position operation allow control of ignition and lighting functions, making it suitable for stock replacements and custom motorcycle builds. It is commonly used in motorcycle repair, restoration projects, and aftermarket electrical system upgrades.

Technical Specifications:

• Manufacturer: Tucker Rocky / Biker's Choice / Twin Power
• Manufacturer Part Number (MPN): 21-5544
• Product Type: Round security key ignition switch
• Switch Type: 3-position ignition switch
• Wiring Configuration: 3-wire
• Positions: Off, ignition only, ignition with lights
• Mounting Type: Stock-location replacement mounting
• Finish: Chrome / metal housing
• Function: Motorcycle ignition and electrical circuit control
• Compatible Equipment: Harley-Davidson FX, XL Sportster, FXR, and Dyna models (application dependent)
• Application Environment: Motorcycle electrical systems and aftermarket V-Twin applications
• Use: Ignition switch replacement and custom motorcycle builds

Common Replacements:

• Twin Power 21-5544 round security key ignition switch
• Biker's Choice round key ignition switch
• Harley-Davidson OEM style 3-position ignition switch