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Genuine Just1 J39 Motocross Helmet Thruster Yellow / Red / Blue Economy Pack [OLv8aqQR]

$33.99 $108.99 -69%

The Just1 J39 Motocross Helmet features a high-strength thermoplastic resin shell, ensuring top-notch protection. It comes in two shell sizes and three EPS sizes, offering a tailored fit for different head shapes. The helmet is equipped with the J.1.

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Genuine Just1 J39 Motocross Helmet Thruster Yellow / Red / Blue Economy Pack [OLv8aqQR]

The Just1 J39 Motocross Helmet features a high-strength thermoplastic resin shell, ensuring top-notch protection. It comes in two shell sizes and three EPS sizes, offering a tailored fit for different head shapes. The helmet is equipped with the J.1.E.R Emergency Removal System, allowing for quick and safe helmet removal in the event of an accident. The interior padding is removable and washable for easy maintenance. With 8 air inlets and 6 air outlets, it provides excellent ventilation, keeping you cool during your ride. The double D locking system ensures a secure and adjustable fit. Shell 1 is designed for sizes S and M, while Shell 2 is for sizes L and XL, providing a perfect fit for riders of all sizes.

Why Choose the Just1 J39 Motocross Helmet Thruster?

The Just1 J39 Motocross Helmet combines safety, comfort, and style with its strong thermoplastic shell, custom fit options, and J.1.E.R Emergency Removal System. It features excellent ventilation, a secure double D locking system, and removable, washable padding for easy maintenance. Perfect for riders seeking protection and performance.

FEATURES

MATERIALS:

  • Polycarbonate external shell (2 sizes)
  • EPS shell (2 sizes)
  • High-quality thermoplastic resin external shell

PROTECTION:

  • ECE 22.06 and DOT certification for safety standards
  • J.LE.R. System (Emergency Cheek Pads Removable System)

KEY FEATURES:

  • PROTX™ Antimicrobial Technology Treatment in the lining
  • Standard peak system with screws

SUITABLE FOR:

  • Ideal for outdoor, off-road conditions (sunny, mild weather)
SIZE GUIDE
Adult Size Guide
SIZE CM IN
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
Youth Size Guide
SIZE CM IN
YS 47-48 18 1/2 - 18 7/8
YM 49-50 19 1/4 - 19 5/8
YL 51-52 20 - 20 1/2

What Our Customers Say

January 26, 2026

Absolutely no complaints!

This is a great product.

- Josephine O..

January 26, 2026

Absolutely no complaints!

I use this all the time. It's great.

- Nolan W..

January 26, 2026

Absolutely no complaints!

A great product, great service.

- Krystal G..

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