The RPHA 31 offers enhanced shock resistance and maximum protection thanks to its Premium Integrated Matrix Evo shell.
Out of stock
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HJC Helmets
S / M / L
Circumference (cm)
XS
53 - 54
S
55 - 56
M
57 - 58
L
59 - 60
XL
61 - 62
2XL
63 - 64
3XL
65 - 66
How to Measure
To find the right helmet size, measure all the way round your head at the widest point. Keep the tape measure above your ears and make sure that the tape measure is not too tight, nor too loose. Take your measurement in centimeters (cm), not inches.
Checking for Best Fit
When a new helmet is first worn, it should actually be slightly tight, with the interior coming into contact with most of the head, but not so restrictive that it causes any pain. There should be no "hot spots" - places where the helmet's interior puts pressure on specific points of the skull or face - but it should not move around freely. With time, a helmet will adjust to match the shape of the rider's head as it is worn and goes through "break-in" and loosens up a little. However, it should never become loose enough to easily turn from side to side.
Put the helmet on - it should be a little tight as it goes on over the head
The helmet should sit on the head evenly with the eye port's upper edge sitting just above the eyebrows and have good peripheral vision available to see side-to-side
Try putting a finger between the helmet interior and the head. If it easily fits, a smaller size should be tried next. Note that some helmet models allow for the cheek pads to be changed out for better fitment, so consider this too when checking for proper sizing
The RPHA 31 offers enhanced shock resistance and maximum protection thanks to its Premium Integrated Matrix (PIM) Evo shell and multi-density EPS. Engineered for a quieter, more aerodynamic ride through extensive wind-tunnel testing, the sun-visor-equipped RPHA 31 decreases noise level and wind turbulence. The RPHA 31 will also accept the second generation of SMART HJC Bluetooth communication systems, allowing riders to stay connected and focused on the road ahead.
Key Features •Premium integrated matrix / P.I.M EVO: reinforcement materials including carbon-aramid hybrid and natural fibre, provide enhanced shock-resistant performance, more comfort, and lightness of the helmet.
•Aerodynamic design shell reduces air resistance & provides stability at high speed.
•Full front-to-back airflow: 2 intakes and 4 exhausts.
•Pinlock® ready HJ-39 visor: provides 99% UV protection, anti-scratch coated.
•Quick, simple and secure visor (shield) ratchet system.
•Visor deflector decreases noise level and wind turbulence.
•Visor holder reduces noise & drag forces and holds visor tight.
•Adjustable 3-step sun shield for optimised position.
•Light Smoke sun shield installed.
•One-touch buckle (micro buckle)
•Interior with advanced anti-bacteria fabric provides enhanced moisture wicking and quick drying function. Reflective material for safety.
•Crown and 3D contour cheek pads: removable and washable.
•Glasses groves can accommodate riders who wear glasses.
•Ready for SMART HJC 11B, 21B & 50B Bluetooth (sold separately).
•Visor: HJ-39.
•Sun shield: HJ-V12.
•Pinlock®: DKS467.
•ECE 22.06 approved.
To find the right helmet size, measure all the way round your head at the widest point. Keep the tape measure above your ears and make sure that the tape measure is not too tight, nor too loose. Take your measurement in centimeters (cm), not inches.
Checking for Best Fit
When a new helmet is first worn, it should actually be slightly tight, with the interior coming into contact with most of the head, but not so restrictive that it causes any pain. There should be no "hot spots" - places where the helmet's interior puts pressure on specific points of the skull or face - but it should not move around freely. With time, a helmet will adjust to match the shape of the rider's head as it is worn and goes through "break-in" and loosens up a little. However, it should never become loose enough to easily turn from side to side.
Put the helmet on - it should be a little tight as it goes on over the head
The helmet should sit on the head evenly with the eye port's upper edge sitting just above the eyebrows and have good peripheral vision available to see side-to-side
Try putting a finger between the helmet interior and the head. If it easily fits, a smaller size should be tried next. Note that some helmet models allow for the cheek pads to be changed out for better fitment, so consider this too when checking for proper sizing
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