Just1 J-GPR Helmet Axel Bassani Replica 2024 – Carbon Fibre Race 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-GPR in the exclusive Axel Bassani Replica 2024 livery is a full-race carbon fibre helmet built to UNECE 22.06 certification — the most stringent homologation standard currently available for road and track use. Engineered around Just1's proprietary S.D.C. System (Sequential Density Construction), it manages both linear and rotational impact forces through a precisely layered arrangement of materials at varying densities, giving your head the most comprehensive protection the brand has ever offered.
Key Features
- UNECE 22.06 certified — meets the highest current ECE homologation standard for road and competition use
- S.D.C. System (Sequential Density Construction) absorbs and disperses both linear and rotational crash energy through multi-density layering
- 3K carbon fibre shell available in four shell sizes with four corresponding EPP/EPS liner sizes for a precise, tailored fit
- J.1.E.R. emergency cheek-pad removal system allows first responders to remove pads safely without disturbing the rider's head or neck
- PROTX2 antimicrobial technology throughout the interior lining keeps the helmet fresher for longer
- Five intake and six exhaust vents plus an integrated, ventilated back protector for sustained track-pace thermal management
- Camelback hydration system compatible — ideal for endurance riding and circuit days
Construction and Performance
The J-GPR's shell is manufactured from genuine 3K carbon fibre, produced in four distinct shell sizes rather than a single stretched unit. Combined with four EPP/EPS liner sizes, each helmet you receive is matched to your head circumference precisely — not padded out to fit. The EPS-lined chin guard adds a further layer of protection at one of the most statistically vulnerable points in a crash. The double D-ring retention system is the gold standard among serious riders and race organisers worldwide, providing a secure, tamper-resistant fastening that will not slip under load.
The interior is fully removable and machine washable, treated with PROTX2 antimicrobial technology to resist odour and bacteria during hard use. A new liner-retention net keeps the padding correctly positioned even after repeated removal and washing cycles.
Ventilation
With five inlet ports and six exhaust outlets, the J-GPR moves air efficiently through the shell at speed. The integrated back protector is itself ventilated, preventing the heat build-up at the nape of the neck that plagues solid-shell designs. Whether you are pacing lap after lap or riding in summer traffic, the airflow management keeps focus where it belongs — on the road ahead.
Axel Bassani Replica 2024 Edition
This Axel Bassani Replica 2024 graphic is a gloss-finish livery produced in direct collaboration with the MotoGP and World Superbike competitor. Each colour transition and graphic element replicates the race-specification artwork worn by Bassani in the 2024 season, making this helmet as visually distinctive on the road as it is technically accomplished on the circuit.
Fitment and Sizing
To find your correct size, wrap a soft tape measure approximately 1 cm above your ears around the widest point of your head and match it to the table below.
- XS — 53–54 cm
- S — 55–56 cm
- M — 57–58 cm
- L — 59–60 cm
- XL — 61–62 cm
- XXL — 63 cm
Specifications
| Specification | Detail |
|---|---|
| Shell material | 3K carbon fibre |
| Certification | UNECE 22.06 |
| Weight | 1,550 g ±50 g (size M) |
| Colour / finish | Axel Bassani Replica 2024, gloss |
| Retention system | Double D-ring |
| Anti-fog visor | Yes (Pinlock lens included) |
| Removable interior | Yes, washable with PROTX2 antimicrobial treatment |
| Hydration compatible | Yes (Camelback ready) |
| Part number | 6030160141015 |
| Shell material | 3K carbon fibre |
|---|---|
| Certification | UNECE 22.06 |
| Weight | 1,550 g ±50 g (size M) |
| Colour / finish | Axel Bassani Replica 2024, gloss |
| Retention system | Double D-ring |
| Anti-fog visor | Yes (included) |
| Removable interior | Yes, washable |
| Hydration compatible | Yes (Camelback ready) |
| Part number | 6030160141015 |
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1x Just1 J-GPR helmet
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1x clear visor
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1x Pinlock lens
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1x dark visor
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1x nose cover
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1x premium helmet bag
Fitment data coming soon.
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// Just1
Just1 J-GPR Helmet Axel Bassani Replica 2024 – Carbon Fibre Race Helmet

Tech specs
- Shell material
- 3K carbon fibre
- Certification
- UNECE 22.06
- Weight
- 1,550 g ±50 g (size M)
- Colour / finish
- Axel Bassani Replica 2024, gloss
- Retention system
- Double D-ring
- Anti-fog visor
- Yes (included)
- Removable interior
- Yes, washable
- Hydration compatible
- Yes (Camelback ready)
- Part number
- 6030160141015
- 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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