Features: Premium PC construction ensures lightweight durability and superior stability for your Motorcycle helmets Base, designed specifically for SHAFT 540 models. Features a innovative anti vibration locking mechanism and tool free installation system for seamless helmets mounting without compromising structural integrity. For adventure motorcyclists and daily commuters requiring secure helmets storage during rides across diverse terrain conditions. Maintains helmets position integrity during high speed highway cruising or challenges with wind resistance. Integrate for SHAFT 540 helmets grooves, offering retention for long distance and competitive racing applications. Specifications: Material: PC Quantity: 1 pair Applicable Model: for SHAFT 540 helmets Package Includes: 1 Pair helmets visors Gear Base note: Helmets NOT include. Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.