J12 Pro Racer Carbon White / Gloss


The JUST1 J12 helmet was developed and designed with the aim of creating the safest and most comfortable helmet for a rider. A perfect fit is an essential element in the performance of a helmet. The outer shell is made of high rigidity carbon fiber which allows to obtain a light and very resistant shell. JUST1 J12 has 2 outer shell sizes ensuring an adequate ratio between weight, safety and stability. The inner shell in EPS (lightweight foam with high shock absorption) is scaled according to the outer shell and therefore with two different sizes.

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  • 12K Full Carbon External Shell
  • 2 Shell Sizes
  • 2 Eps Sizes
  • J.1.E.R. Emergency Cheek Pad Removal System
  • Double D Retention System
  • New Inner lining fitting for a better comfort
  • Removable and washable inner lining
  • PROTX2™ Antimicrobial Technology new lining treatment
  • 11 Intake and 8 exhaust vents
  • Helmet shell shape = intermediate oval
  • ECE Certification
  • DOT Certification

Additional information

Weight 3.05 lbs

Black, White




X-Small, Small, Medium, Large, X-Large, XX-Large


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  • Wrap the measuring tape around the fullest part of the head.
  • This will be just above the ears and about a half-inch above the eyebrows for most.
  • Take the measurement at the forehead.
  • To get the most accurate measure, have help with this step.
X-Small20 7/8 - 21 1/453 - 54
Small21 5/8 - 2255 - 56
Meidum22 1/857 - 58
Large23 1/4 - 23 5/859 - 60
X-Large24 - 24 3/861 - 62
XX-Large24 3/463