In the Spotlight｜HJC RPHA 31 Dereen Helmet｜ Other Products

The RPHA 31 open-face model benefits from the Premium Integrated Matrix (PIM) Evo shell and multi-density EPS, excelling in augmenting shock resistance and furnishing optimal protection
Methodically designed, it orchestrates a serenely quiet and aerodynamically refined ride, an outcome achieved through meticulous wind tunnel trials
The sun-visor-equipped RPHA 31 effectively diminishes noise levels and mitigates wind turbulence
Seamlessly aligning with technological progress, the RPHA 31 accommodates the second-generation SMART HJC Bluetooth communication systems allowing an undistracted focus on the road ahead (sold separately)
Pinlock® 120XLT® DKS467 Ready HJ-39 Shield: Provides 99% UV protection, anti-scratch coated

PIM EVO Shell

Premium integrated matrix / P.I.M EVO: Reinforcement materials including Carbon-Aramid Hybrid and Natural Fiber, 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
The Dynamic Multi-Step Sun-Visor – offers a smoke-tinted, anti-fog coating that guarantees pristine clarity
Swiftly activated through our bottom-positioned operation system
Customize your experience further with multi-step adjustment feature, allowing you to position the sun visor up to 10 mm closer to your face, ensuring optimal shading and personalized comfort

Sun Visor Mechanism

Convenient integrated sun visor, boasting an anti-fog-coated smoke tint for exceptional clarity
Swiftly deployable via bottom-positioned operation system, this feature ensures effortless sun protection
Shield holder reduces noise & drag forces and holds visor tight

RPHA Premium Fit Interior

Advanced anti-bacterial fabric provides moisture-wicking and quick-drying function
Crown and Cheek pads: Removable and washable
3D contour cheek pads
Reflective material for safety
Interchangeable cheek pads throughout all sizes for custom fit

Precision Fit & Vision Control

Distinguished by an elongated shell and extended chin EPS, the RPHA 31 ensures an encompassing full face-level fit
Visor deflector, effortlessly deployable, augments the helmet's design
Enhanced by a meticulously engineered visor holder, it not only curtails noise and bolsters visor security but also proficiently thwarts incoming wind turbulence

HJC Helmet Size Chart
RPHA 31

Centimeters
Inches
Hat Size

XS
54 - 55
21 1/4” - 21 5/8”
6 3/4 - 6 7/8

S
55 - 56
21 5/8” - 22”
6 7/8 - 7

M
57 - 58
22 1/4” - 22 7/8”
7 1/8 - 7 1/4

L
58 - 59
23 1/4” - 23 5/8”
7 1/4 - 7 3/8

XL
60 - 61
23 5/8” - 24”
7 1/2 - 7 5/8

2XL
62 - 63
24 3/8” - 24 3/4”
7 3/4 - 7 7/8

HJC Helmet Size Chart
RPHA 31 — Interior

Size (cm)
Cheek Pads (cm)
Liner (cm)

XS
54 - 55
35
12

S
55 - 56
30
9

M
57 - 58
30
9

L
58 - 59
30
9

XL
60 - 61
35
12

2XL
62 - 63
25
9
Brand:HJCSKU:0104-3833COLOR:MT BK/Orange, MT Black/Grey, Red/White/BlueSIZE:XS, Small, Medium, Large, XL, XXL