The SD1 is Simpson’s lightest, most aerodynamic helmet, offering premium performance at a competitive price. It’s specifically designed for open-wheel dirt racing, featuring a front chin spoiler and no front vents. Certification: Snell SA2020, which is generally approved by racing organizations and tracks through 2030. Always confirm with your sanctioning body for compliance. The Snell Foundation advises replacing helmets within five years of manufacture, as protective performance may decline afterward, potentially making the helmet ineligible for sanctioned competition.

Key Features
• Modern aerodynamic styling
• Lightest helmet in Simpson’s lineup
• Certified to SA2020 standards
• Offered in both composite and autoclave-cured carbon fiber constructions
• Composite models available in 9 colors, including new options: Gray, Yellow, and Copper
• Removable cheek pads (0.75"–1.375") for a personalized fit
• Removable top pads (0.25"–0.625") to adjust helmet height and comfort
• Includes removable gel ear cups
• Fully compatible with Simpson communication systems
• Front chin spoiler enhances stability in open-cockpit cars
• No front vents to prevent dirt and debris entry
• Equipped with top and rear ventilation ports
• Optional forced-air system (top or top-left offset) for cooling and fog reduction – coming soon
• Optional rear spoiler available for added aerodynamic balance
• Standard visor: anti-fog, anti-scratch (non-anti-fog clear version also offered)
• Additional visors available
• Each helmet is hand-crafted to order in New Braunfels, Texas