Just1 J-PGR Impulse Gold / Carbon Gloss Full-Face Helmet
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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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The Just1 J-PGR Impulse Gold / Carbon in its eye-catching gloss finish delivers everything a serious rider needs day in, day out — a full carbon shell that keeps weight off your neck on long rides, dual certification for road legality worldwide, and a comprehensive accessory package that rivals come nowhere near at this price point.
Key Features
- Full carbon shell available in 4 shell sizes for a precise, performance-oriented fit across the size range
- 4 EPS/EPP inner liner sizes with Sequential Density Construction, using varied foam densities to maximise impact absorption at any point of the shell
- Dual certified to ECE 22.06 and DOT — legal and validated for road and track use across Europe and North America
- E.R.C. Emergency Release System allows cheek pads to be removed rapidly by first responders without disturbing the rider
- PROTX antibacterial, odour-resistant, quick-drying liner that is fully removable and machine washable
- Wide Vision Visor with tool-free swap mechanism, Pinlock 70 ready and Pinlock 70 insert included in the box alongside a dark smoke visor
Everyday Comfort and Long-Ride Usability
Carbon construction is not merely a style statement here — the reduced shell weight translates directly into less neck fatigue on commutes and touring stints alike. The sportingly ergonomic fit holds the helmet securely without pressure points, while efficient multi-point ventilation channels fresh air through the interior even in slow urban traffic. The PROTX liner manages moisture and odour through long wearing sessions, and because it washes out completely, keeping the interior fresh over months of daily use is straightforward rather than a chore.
Visor System and Included Accessories
The Wide Vision Visor provides an expansive field of view that makes filtering traffic and spotting road hazards easier than narrower visor designs allow. Tool-free removal means swapping between the included clear and dark smoke visors at a café stop takes seconds. The Pinlock 70 anti-fog insert is already in the box — there is nothing extra to order before the helmet is genuinely ready for cold morning rides. A nose cover and helmet bag round out a package that represents outstanding value relative to what competitors charge for the same combination of items.
Safety Architecture
Just1 engineered the J-PGR around four discrete shell sizes rather than a single oversized shell trimmed with padding, so the carbon structure itself is correctly proportioned for each head circumference. The four-density EPS/EPP Sequential Density Construction liner complements this by tuning impact energy management across the full surface area of the shell. The E.R.C. system gives paramedics a clear, fast path to cheek pad removal without neck movement — a detail that matters enormously in a genuine incident.
Fitment and Sizing
The J-PGR Impulse Gold / Carbon Gloss is available in six adult sizes. To find your size, wrap a soft tape measure around your head approximately 1.5 cm above the eyebrows and across the widest point above the ears. Measure at least twice for accuracy. The helmet should feel snug with no pressure points; if it rotates easily on your head, size down.
| Size | Head circumference (cm) | Inches |
|---|---|---|
| XS | 53–54 | 20 7/8 – 21 1/4 |
| S | 55–56 | 21 5/8 – 22 |
| M | 57–58 | 22 1/8 – 23 1/8 |
| L | 58–60 | 23 1/4 – 23 5/8 |
| XL | 61–62 | 24 – 24 3/8 |
| XXL | 63 | 24 3/4 |
Specifications
- Brand: Just1
- Model: J-PGR Impulse Gold / Carbon Gloss
- Type: Full-face helmet
- Shell material: Full carbon fibre
- Shell sizes: 4
- Liner sizes: 4 (EPS/EPP, Sequential Density Construction)
- Certification: ECE 22.06 and DOT
- Liner: PROTX antibacterial, removable and washable
- Visor: Wide Vision, tool-free removal, Pinlock 70 ready
- Emergency system: E.R.C. Emergency Release System
- Sizes available: XS, S, M, L, XL, XXL
| Brand | Just1 |
|---|---|
| Model | J-PGR Impulse Gold / Carbon Gloss |
| Type | Full-face helmet |
| Shell material | Full carbon fibre |
| Shell sizes | 4 |
| Liner construction | 4 EPS/EPP sizes, Sequential Density Construction |
| Certifications | ECE 22.06 and DOT |
| Liner system | PROTX antibacterial, removable and washable |
| Visor system | Wide Vision, tool-free removal, Pinlock 70 ready |
| Emergency system | E.R.C. Emergency Release System |
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Just1 J-PGR Impulse Gold / Carbon Gloss helmet
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Dark smoke visor
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Pinlock 70 insert
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Nose cover
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Helmet bag
Fitment data coming soon.
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// Just1
Just1 J-PGR Impulse Gold / Carbon Gloss Full-Face Helmet

Tech specs
- Brand
- Just1
- Model
- J-PGR Impulse Gold / Carbon Gloss
- Type
- Full-face helmet
- Shell material
- Full carbon fibre
- Shell sizes
- 4
- Liner construction
- 4 EPS/EPP sizes, Sequential Density Construction
- Certifications
- ECE 22.06 and DOT
- Liner system
- PROTX antibacterial, removable and washable
- Visor system
- Wide Vision, tool-free removal, Pinlock 70 ready
- Emergency system
- E.R.C. Emergency Release System
- Worldwide shipping
- Genuine parts & verified quality
- 14-day returns — in stock ships within 24h
- Personal email support
// Support
Frequently asked questions
Shipping & delivery
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