Simpson has built helmets since 1958, when Bill Simpson brought drag racing safety gear to the track, and the company now works from New Braunfels, Texas. Most of the range is Snell SA2020 for cars, and plenty of North American kart clubs accept SA helmets, so models like the Speedway Shark and the Diamondback turn up on kart grids. Shells come in composite and carbon, with a wide eyeport and thick cheek pads.
A sound choice for an adult who races a kart and a car and wants one helmet for both. Not a choice for CIK-FIA junior classes, where only CMR2016 is accepted. SA shells carry a fire-rated liner and forced air ports that a karter never uses, so they weigh more than a kart-specific helmet.
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