The SD1, designed for open-wheel dirt racing enthusiasts embodies everything you've come to love from Simpson race helmets. Featuring an aggressive chin bar design, closed off vents and an array of accessories this helmet is sure to be on your list of must haves.

Inside the helmet, you'll find a new premium interior liner with removable cheek pads with gel ear cups and a top pad. With four different sizes for both cheek and top pads, the SD1 ensures a perfect fit from XS to XXL, offered between two shell sizes. Compatibility is key, and the SD1 seamlessly integrates with your favorite Simpson accessories, from communication kits to breath deflectors and anchors for HANS or Hybrid devices.

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Simpson SD1 Helmets

Helmet Accessoris