Just1 J-STR Helmet Titan Red / Blue / Black Matte – ECE 22.06 Full-Face
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Size chart JUST1 J-STR/PGR/PGRF
| 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 tape measure.
It is important that the tape measure runs around the widest part of the head – only then will you get a correct result.
Place the tape measure at the front, about 1–2 cm above the eyebrows, and run it along the sides above the ears.
At the back, the tape must run over the largest part of the back of the head (not too low on the neck). The tape may run slightly at an angle – what matters is that it sits all the way around the largest points of the head.
Make sure the tape measure sits snugly but does not dig in. Measure 2–3 times for the most accurate result. You can then compare the measured value in centimetres (cm) with our size chart.
Tips for an accurate result
- Keep hair flat (e.g. do not measure over a voluminous hairstyle)
- Keep the tape horizontal, i.e. 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 note on fit
The right helmet should fit firmly without causing uncomfortable pressure points.
A new helmet may feel a little tighter at first, as the inner lining adapts slightly over time.
- Worldwide shipping
- Genuine parts & verified quality
- Personal email support
- 14-day returns — in stock ships within 24h
Shipping & Returns
We ship with DHL and FedEx — express on request. If an item is in stock, express delivery can often go out within 1 business day. Standard delivery takes about 2–5 business days domestically and usually around a week worldwide. Please check the available shipping options and delivery times in your cart, as we offer several carriers depending on the country.
Returns must be registered in advance by email and are possible in line with our cancellation policy (14-day return request + 14-day return window after approval). Please note: unregistered returns are not accepted. You'll find all details on conditions, exceptions and refunds in our cancellation policy.
Payment & Security
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Triple-certified and built on Just1's latest J-STR safety platform, the J-STR Titan in Red / Blue / Black Matte delivers the kind of protection that serious street and sport riders demand — without compromise on comfort or style. The aggressive matte multicolour graphic is purpose-designed for streetfighter, naked, and sportbike riders who want a helmet that looks as purposeful as it rides.
Key Features
- ECE 22.06, DOT, and CCC certified — meets the most current international safety standards for road and track use
- ABS outer shell manufactured in two shell sizes for a precise, proportionate fit across the full size run
- EPS inner shell in two densities / sizes for optimised impact energy management
- J.I.E.R. Emergency Cheek Pads Removal System — enables first responders to remove the helmet safely without aggravating a potential neck injury
- Double-D retaining ring — the trusted, race-proven buckle system for a secure, repeatable fit every ride
- Protx2 antibacterial and odour-inhibiting liner — fully removable and machine washable
- Wide Vision visor with scratch-resistant coating and Pinlock 70 preparation (Pinlock lens sold separately)
Safety First — Built on the J-STR Platform
The J-STR Titan earns its ECE 22.06 certification — the most stringent version of the European standard — alongside concurrent DOT and CCC approval, making it legally compliant across Europe, North America, and Asia. The two-piece ABS shell architecture means smaller sizes are not simply squeezed into an oversized shell; each shell is sized to maintain consistent wall thickness and impact geometry. The same logic applies to the EPS liner, where a dedicated size ensures the foam's energy-absorption characteristics are tuned to the actual head it is protecting. The J.I.E.R. system adds a further layer of real-world safety: cheek pads can be extracted rapidly by emergency personnel using the pull tabs, reducing the risk of secondary injury during helmet removal at the scene of an accident.
Comfort and Interior
Long-distance comfort comes from the Protx2-treated interior. The antibacterial treatment suppresses the bacteria responsible for odour build-up, keeping the liner fresher for longer between washes. When a wash is due, the entire interior — cheek pads and crown liner — pulls clear of the shell in moments and can go straight into the machine. Ergonomically contoured cheek pads hold the face securely without pressure points, and the ventilation system circulates fresh air through the helmet to manage heat on spirited road rides.
Visor and Equipment
The Wide Vision visor opens a broad, distortion-free field of view that is especially valuable in fast, dynamic riding situations. The scratch-resistant coating protects optical clarity through everyday use, while the Pinlock 70-ready insert pins allow the optional Pinlock anti-fog lens to be fitted without modification. A nose cover comes supplied in the box to reduce turbulence and buffeting at speed. A helmet bag is also included to protect the shell in storage and transport.
Sizing Guide
Measure your head circumference with a tape measure placed just above the eyebrows and over the ears — this is the widest point. Repeat the measurement once to confirm accuracy. Choose the size that corresponds to your measurement in the table below. The helmet should sit firmly on the head with even, all-round contact; if it moves under gentle side-to-side pressure, size down.
| Size | Head circumference (cm) | Inches |
|---|---|---|
| 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 |
Fitment & Compatibility
The Just1 J-STR Titan is a universal full-face helmet designed for adult riders of all motorcycle types — streetfighter, naked bike, sport, and road. It is not model- or make-specific; size selection is based solely on head circumference as detailed in the sizing table above.
Specifications
- Brand: Just1
- Model: J-STR Titan
- Colour: Red / Blue / Black Matte
- Type: Full-face helmet
- Shell material: ABS (2 shell sizes)
- Liner: EPS (2 sizes), Protx2 antibacterial removable interior
- Certifications: ECE 22.06, DOT, CCC
- Retention system: Double-D ring
- Visor: Wide Vision, scratch-resistant, Pinlock 70 ready
- Sizes available: XS, S, M, L, XL, XXL
- Part number: 6030390214004
| Brand | Just1 |
|---|---|
| Model | J-STR Titan |
| Colour | Red / Blue / Black Matte |
| Type | Full-face helmet |
| Shell material | ABS (2 shell sizes) |
| Certifications | ECE 22.06, DOT, CCC |
| Retention system | Double-D ring |
| Visor | Wide Vision, scratch-resistant, Pinlock 70 ready |
| Part number | 6030390214004 |
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Just1 J-STR Titan Red / Blue / Black Matte helmet
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Nose cover
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Helmet bag
Fitment data coming soon.
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// Just1
Just1 J-STR Helmet Titan Red / Blue / Black Matte – ECE 22.06 Full-Face

Tech specs
- Brand
- Just1
- Model
- J-STR Titan
- Colour
- Red / Blue / Black Matte
- Type
- Full-face helmet
- Shell material
- ABS (2 shell sizes)
- Certifications
- ECE 22.06, DOT, CCC
- Retention system
- Double-D ring
- Visor
- Wide Vision, scratch-resistant, Pinlock 70 ready
- Part number
- 6030390214004
- Worldwide shipping
- Genuine parts & verified quality
- 14-day returns — in stock ships within 24h
- Personal email support
// Support
Frequently asked questions
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