The HJC RPHA 1N is built for race-developed performance, combining FIM-certified protection with advanced aerodynamics and lightweight P.I.M. Plus construction.
Designed as a full face helmet, the RPHA 1N focuses on a streamlined, performance-driven ride feel for riders who want a premium HJC lid with track-inspired intent.
Key Features
Race-developed performance
FIM-certified protection
Advanced aerodynamics
Lightweight P.I.M. Plus construction
Full face helmet design
Whether you’re pushing pace on track days or prioritizing stability at speed on the street, the RPHA 1N is engineered around aerodynamic efficiency and a focused full-face profile.
An owner’s manual is available for the HJC RPHA 1N and may include helpful information on setup, sizing, care, and helmet features depending on the product.
A sizing reference chart is also available to help you select the right size.
Shop the HJC RPHA 1N at All American KTM—your nationwide source for HJC helmets and premium riding gear.
HJC RPHA 1N Owner’s Manual & Product Guide
View or download the official product manual for the
HJC RPHA 1N. This guide may include important information about helmet features,
fitment, care, use, safety details, replacement parts, and product-specific instructions.
⚠️ WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm.
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