Diamondback Expand



The Stig has evolved!

A major revision to our Simpson Diamondback for 2021 combines a new Italian composite shell with a shorter chinbar and changes to the visor for improved fit and function while also providing enhanced impact protection.

More details

ETA 3-4 weeks

13 473 kr

incl. 25% VAT, login to confirm your local VAT.


  • SNELL SA2020 Certified
  • Recessed eye port offers a 100% shield seal
  • Ready for helmet communication
  • Head restraint ready
  • Italian composite shell
  • Assembled in Texas
  • Helmet ships with a clear shield installed. Order additional shields HERE
  • Defined "wave eliminators" increase functionality from an aerodynamic aspect
  • Recommended for multi-use including Stock Car, Dirt Track, Drag Racing, Karting, Road Racing and Off Road
  • Availible in size
    7 1/8 (56cm) 
    7 1/4 (57cm)
    7 3/8 (58cm)
    7 1/2 (59cm)
    7 5/8 (60cm)
    7 3/4 (61cm)

MTO (Made to order) ETA 2-3 weeks.

Snell SA2015 vs SA2020 …what’s changed?

  • The Snell SA2020 testing requirements have changed a small amount and have now become more in line with the FIA 8859 Helmet Standard.
  • Details:
  • Increased velocity by 5-10% for impact testing on the 2nd hit across all shell sizes.
  • Increased velocity from 5.7 to 6.0 m/s on the 54cm to 59cm size.
  • Increased peak G threshold on the 54cm to 59cm size and 60cm-64cm size.



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