Just1 J-STR Helmet Union Gray / Black Matte 6030390201001
Just1 J-STR Helmet Union Gray / Black Matte 6030390201001
Delivery time on request
| Size | Head Circumference (cm) | Head Circumference (inch) |
|---|---|---|
| XS | 53–54 cm | 20.9–21.3 in |
| S | 55–56 cm | 21.7–22.0 in |
| M | 57–58 cm | 22.4–22.8 in |
| L | 59–60 cm | 23.2–23.6 in |
| XL | 61–62 cm | 24.0–24.4 in |
| XXL | 63–64 cm | 24.8–25.2 in |
How to Measure Your Helmet Size Correctly: To find the right helmet size, measure your head circumference with a flexible measuring tape.
It is important that the measuring tape runs at the widest part of your head – only then will you get an accurate result.
Place the measuring tape about 1–2 cm above your eyebrows at the front and run it along the sides above your ears.
At the back, the measuring tape should run over the largest point at the back of your head (not too low on the neck). The tape can run slightly diagonally – what matters is that it fits snugly around the largest circumference points of your head.
Make sure that the measuring tape is tight but does not cut in. It is best to measure 2–3 times to get the most accurate result possible. You can then compare the measured value in centimeters (cm) with our size chart.
Tips for an Accurate Result
- Flatten hair (e.g., do not measure with a voluminous hairstyle)
- Run the measuring tape horizontally or along the largest circumference
- Do not measure too loosely
- For values between two sizes:
→ usually choose the larger size (depending on helmet model/fit)
Important for fit
The right helmet should fit snugly without causing uncomfortable pressure points.
A new helmet may feel a bit tighter at first, as the inner padding will slightly adjust over time.
JUST1 J-STR Helmet – Union Gray / Black Matt
Subtle matte design with sporty DNA & strong safety
The JUST1 J-STR Union Gray/Black Matt combines a clean, sporty matte finish with modern safety and comfort technology. Perfect for riders who prefer a calmer yet powerful design – without compromising on protection, comfort, and technology.
The helmet meets the latest ECE 22.06 standard and is ideal for commuters, touring riders, and sporty street riders.
🛡 SAFETY – developed to the latest standards
The Union relies on the proven safety platform of the J-STR series:
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robust ABS outer shell (2 shell sizes)
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EPS inner shell in 2 sizes
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ECE 22.06 certified
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DOT certified
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J.I.E.R. Emergency Cheek Pads Removal System
→ facilitates helmet removal in an emergency -
sturdy Double-D closure
For riders who expect reliable all-round protection.
😌 COMFORT – hygienic, soft & easy to care for
The interior is optimized for long wearing times:
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Protx2™ antimicrobial inner lining
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removable & washable
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comfortable cheek pads for a stable fit
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effective ventilation system for optimal air circulation
The helmet remains pleasantly fresh during heat, touring, and long distances.
👁 VISOR – wide view & anti-fog prepared
More overview for increased safety:
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large Wide Vision visor
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scratch-resistant
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Pinlock 70 ready (lens available as an option)
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including Nose Cover
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including helmet bag
Perfectly suitable for urban traffic, country roads, and sporty rides.
🎁 SCOPE OF DELIVERY
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JUST1 J-STR Union Gray/Black Matte
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Nose Cover
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helmet bag
📏 Size Chart (Adults)
| Size | Head circumference (cm) | Inch |
|---|---|---|
| XS | 53–54 | 20.9 – 21.3 |
| S | 55–56 | 21.7 – 22.1 |
| M | 57–58 | 22.4 – 22.8 |
| L | 59–60 | 23.2 – 23.6 |
| XL | 61–62 | 24.0 – 24.4 |
| XXL | 63 | 24.8 – 25.2 |
🧭 This is how to measure your helmet size correctly
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Position the measuring tape just above the eyebrows
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Measure the head circumference at the widest point
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2–3 measurements for accuracy
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The helmet should fit snugly but comfortably
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If it slips → choose one size smaller
🚀 CONCLUSION
The JUST1 J-STR Union Gray/Black Matte impresses with a modern, understated matte design, high safety according to ECE 22.06, and strong everyday comfort. Ideal for riders who want to perfectly combine sportiness and understatement.
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About Us
About Us
Our passion for quality and innovation drives us to offer you the best products and services for motorcycle enthusiasts. From exclusive high-performance parts to tailor-made solutions — your riding experience is at the center of everything we do.
Shipping & Returns
Shipping & Returns
We ship with DHL and FedEx — if requested, also via express. If an item is in stock, shipping via express can, in many cases, be delivered within 1 business day. Standard delivery time is typically about 2–5 business days within the country, and worldwide usually about 1 week. Please check the available shipping options and transit times in the cart, as we offer several shipping providers depending on the country.
Returns must be registered in advance by email and are possible according to our return policy (14 days to request a return + 14 days return shipping deadline after approval). Please note: Unregistered returns will not be accepted. You can find all details on the terms, exceptions, and refunds in our return policy.
Your payment information is processed securely. We do not store any credit card details and we have no access to your credit card information.
More information in our FAQs
Write to our team via email – we’ll get back to you as quickly as possible.
How long does it take to process my order?
How long does it take to process my order?
If the item is in stock, we usually process your order very quickly; in many cases it can even be shipped the same day.
Our processing times are Monday to Friday, 07:30–16:30.
Do you ship internationally?
Do you ship internationally?
Yes, we ship worldwide. Shipping is carried out depending on the country and the selection, via DHL or FedEx.
What is your return policy?
What is your return policy?
Returns must be registered in advance by email. You can request a return within 14 days of receiving the item and, after approval, you have another 14 days to send it back.
Important: Unregistered returns are not accepted. All details can be found in our cancellation policy.
What does “delivery time on request” mean?
What does “delivery time on request” mean?
“Delivery time on request” means the item is generally not in stock right away and may need to be ordered separately. Please contact us before purchase – we’ll check availability and tell you the estimated delivery time.
Do you offer express shipping?
Do you offer express shipping?
Yes, we offer express shipping. If an item is in stock, in many cases shipping can be completed within 1 business day (depending on the country and shipping option). You can see the available shipping methods in the shopping cart.
