Just1 J39

The Just1 J39 is an ECE 22.06 motocross helmet range built around a polycarbonate shell and a wide choice of current graphics. Moto Central’s collection includes Thruster, Revo, Xeno, Marshall and solid finishes, giving riders a consistent helmet specification across several visual styles.

J39 specification

Just1 lists two polycarbonate outer-shell sizes and two EPS sizes for the current J39. The helmet uses a high-quality thermoplastic resin construction, an emergency cheek-pad removal system, PROTX-treated lining and a conventional screw-mounted peak. A helmet bag and peak extension are included in Just1’s official specification.

The J39 is certified to ECE 22.06. This separates it from the older J38, while its construction and peak arrangement also differ from the more expensive multi-composite J22.

Fit, goggles and peak adjustment

Measure the head at its widest point and use the model size chart as a starting point. The helmet should sit level, feel evenly close around the head and resist movement when the chin bar is gently rotated. Test the eye port with your goggles and confirm that the strap stays in place around the rear of the shell.

• Peak: the J39 uses a screw-mounted peak, so check the fasteners regularly without overtightening them.
• Interior: remove the washable lining for cleaning and refit every press-stud securely.
• Approval: confirm ECE 22.06 on the label of the exact helmet received.

Why buy the J39 from Moto Central?

Moto Central offers the model in a broad selection of graphics and keeps it separate from the legacy J38 and J40. This makes construction, approval and colour comparisons clearer before ordering.

Customer questions

Is the J39 a carbon helmet?
No. Just1 specifies a polycarbonate external shell for the current J39.

Does it use the same quick-release peak as the J40?
No. Just1 describes the J39 as having a standard screw-mounted peak.