Mach IV MOD Helmet

509 Mach IV MOD Helmet

Take a breather with the 509 Mach IV MOD Helmet. This fully modular design allows you to switch between dual sport, full face, or open face configurations. Featuring 509’s signature graphics in an aerodynamic shell, it’s built for versatility — whether you’re chatting with a buddy, cooling off at a stoplight, or sipping coffee on your morning ride. Adjustable vents and an internal drop-down sun shade make it the perfect everyday commuter helmet.

Features:

• Three-configuration modular design: dual sport, full face, or open face
• Durable Poly Alloy shell
• Climate Control Ventilation system with two-stage chin vent, adjustable forehead vents, and exhaust vents
• Moisture-wicking removable liner and cheek pads for custom fit and easy washing
• Fidlock® magnetic chin strap closure for quick and secure fastening
• Internal drop-down sun shade
• Multiple shield options: polarized, mirrored, and photochromic
• ITO (Indium Tin Oxide) coating prevents scratches and fogging
• Universal camera mount capable

Specifications:

• Certification: DOT & ECE 22.05
• Starting weight: 1680 g
• Head shape: Intermediate oval
• Size range: XS–2XL
• Shell breakdown: Small (XS–L), Large (XL–2XL)
• Included items: 509 helmet drawstring bag, breathbox, 509 sticker