Just1 J-STR Helmet Astro Red / Blue / Black Gloss 6030390112007
Just1 J-STR Helmet Astro Red / Blue / Black Gloss 6030390112007
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 – Astro Red / Blue / Black Gloss
Dynamic graphic design meets modern safety
With the JUST1 J-STR Astro, you get a strikingly designed full-face helmet that combines sportiness, comfort, and high-quality safety standards. The glossy Red/Blue/Black graphic makes it a real eye-catcher – perfect for sporty street and naked bike riders.
The helmet impresses both in everyday use and on longer tours with its lightweight feel and reliable construction according to ECE 22.06.
🛡 SAFETY – developed according to the latest standards
The Astro utilizes the advanced safety platform of the J-STR series:
-
ABS outer shell in 2 shell sizes
-
EPS inner shell in 2 sizes
-
ECE 22.06 certified
-
DOT certified
-
J.I.E.R. Emergency Cheek Pads Removal System
→ quick & safe helmet removal in case of emergency -
robust double-D closure
An ideal helmet for sporty riders who do not want to compromise on the latest standards.
😌 COMFORT – breathable interior
An advanced inner lining ensures a pleasant helmet climate:
-
Protx2™ antimicrobial treatment
-
removable & washable
-
comfortable cheek pads for a stable fit
-
efficient ventilation for optimal air circulation
Even on longer distances, the J-STR remains pleasantly fresh and stable.
👁 VISOR – wide view & anti-fog prepared
Thanks to its modern visor design, you enjoy a very wide field of vision:
-
Wide Vision Visor
-
scratch-resistant & clear
-
Pinlock 70 prepared (Pinlock insert optional)
-
including Nose Cover
-
practical helmet bag
Excellent visibility – whether in city traffic, on country roads, or during sporty riding.
🎁 SCOPE OF DELIVERY
-
JUST1 J-STR Astro Red/Blue/Black
-
Nose Cover
-
Helmet Bag
📏 Adult Size Chart
| 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 the correct helmet size
-
Place the measuring tape just above the eyebrows
-
Measure the circumference at the widest point of the head
-
Measure multiple times for accurate values
-
The helmet should fit snugly but not uncomfortably
-
If the helmet moves while wearing it → choose one size smaller
🚀 CONCLUSION
The JUST1 J-STR Astro is a sporty, stylish full-face helmet focused on safety, comfort, and strong aesthetics. Ideal for riders who want to combine modern, vibrant design with proven technology.
Pickup availability could not be loaded
About Us
About Us
Our passion for quality and innovation drives us to provide you with the best products and services for motorcycle enthusiasts. From exclusive high-performance parts to custom solutions – your riding experience is our priority.
Shipping & Returns
Shipping & Returns
We ship with DHL and FedEx – express shipping is available upon request. If an item is in stock, express shipping can often be done within 1 business day. The regular delivery time is approximately 2-5 business days nationally, and about 1 week internationally. Please check the available shipping options and times in the cart, as we offer multiple shipping providers depending on the country.
Returns must be registered in advance via email and are possible according to our cancellation policy (14 days return request + 14 days return period after approval). Please note: Unregistered returns will not be accepted. All details regarding conditions, exceptions, and refunds can be found in our cancellation policy.
Your payment information is processed securely. We do not store credit card data and do not have access to your credit card information.
More info in our FAQs
Write an email to our team – we will get back to you as soon 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, often shipping it 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 done via DHL or FedEx depending on the country and selection.
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 receipt and have an additional 14 days for the return shipment after approval.
Important: Unregistered returns will not be accepted. You can find all details in our cancellation policy.
What does 'Delivery time on request' mean?
What does 'Delivery time on request' mean?
'Delivery time on request' means that the item is usually not directly in stock and may need to be specially ordered. Please contact us before purchasing – we will check availability and provide you with 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, shipping can often occur within 1 business day (depending on the country and shipping option). You can see the available shipping methods in the shopping cart.
