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HJC Manuals & User Guides

HJC is a global leader in manufacturing high-quality motorcycle and bicycle helmets, known for safety, innovation, and integrating advanced communication technology.

Tip: include the full model number printed on your HJC label for the best match.

About HJC manuals on Manuals.plus

Since 1971, HJC has specialized exclusively in manufacturing motorcycle helmets. By combining extensive specialized manufacturing experience with innovative ideas and reasonable pricing, HJC has secured its place as the #1 helmet brand in North America—a title it has held since 1992. The brand offers a comprehensive lineup of head protection, including the high-performance RPHA series, full-face, open-face, off-road, and modular system helmets.

Beyond traditional helmets, HJC has embraced modern connectivity through its SMART HJC line. Developed in partnership with Sena, these Bluetooth communication systems are designed to integrate seamlessly into HJC helmet shells, maintaining optimal aerodynamics and balance. HJC also extends its expertise to the cycling industry through HJC Sports, producing technologically advanced helmets for road, triathlon, and urban riders.

HJC manuals

Latest manuals from manuals+ curated for this brand.

HJC HELMETS C50 Offroad Helmets Owner’s Manual

October 16, 2025
HJC HELMETS C50 Offroad Helmets WARNING For your safety, it is important that you completely read the owner's manual and all warning labels. Features Advanced Polycarbonate Compound (APC) Advanced Channeling…

HJ-34P HJC Helmets Owner’s Manual

September 15, 2023
HJC VINA LIMITED COMPANY Made In Vietnam Owner's Manual Advanced Polycarbonate shell Interchangeable cheek pads throughout all sizes Advanced Channeling Ventilation System Double D-ring PINLOCK READY HJ-34P VISOR DOT APPROVED…

HJC C50 Owner's Manual

Owner's Manual
Comprehensive owner's manual for the HJC C50 motorcycle helmet, covering safety, fitting, maintenance, and warranty information.

HJC RPHA 1 v2 Carbon Helmet Owner's Manual

Owner's Manual
This owner's manual for the HJC RPHA 1 v2 Carbon motorcycle helmet provides comprehensive guidance on selection, proper wear, safety, maintenance, and warranty information. Essential reading for all riders.

SMART HJC 21B Quick Start Guide

quick start guide
This guide provides instructions for installing and operating the SMART HJC 21B 2nd Gen Standard Motorcycle Bluetooth Communication System for HJC Helmets, covering setup, basic functions, phone pairing, intercom, and…

HJC Helmet Size Chart

technical specification
Comprehensive size charts for HJC helmets, including convention measurements and specific model sizing for RPHA series and other models. Find your perfect fit with detailed CM, Hat Size, and Inch…

HJC manuals from online retailers

HJC F71 Full Face Motorcycle Helmet User Manual

F71 • February 5, 2026
Comprehensive user manual for the HJC F71 Solid Full Face Motorcycle Helmet, covering safety standards, key features, setup, operation, maintenance, and technical specifications.

HJC HJ-09 Helmet Shield Instruction Manual

HJ-09 • January 30, 2026
Comprehensive instruction manual for the HJC HJ-09 Helmet Shield, covering compatibility, installation, removal, care, and specifications for models like AC-12, CL-15, CL-16, CL-SP, CS-R1, FS-10, FS-15, IS-16.

HJC support FAQ

Common questions about manuals, registration, and support for this brand.

  • How do I choose the correct HJC helmet size?

    Wrap a tape measure around your head approximately one inch (2.5 cm) above your eyebrows. Compare this measurement to the official HJC Size Chart. If your measurement falls between two sizes, try the larger size first. A correct fit should be snug but not painful, and the helmet should not move freely on your head.

  • Can I use paint or stickers on my HJC helmet?

    It is generally recommended to avoid applying paint, stickers, petrol, or other solvents to the helmet, as these substances can damage the shell or protective foam integrity, potentially reducing safety.

  • How do I pair my SMART HJC Bluetooth system?

    For systems like the 11B or 21B, typically hold the center or power button for 10 seconds to enter configuration mode, or use the Smart Intercom Pairing (SIP) feature via the SMART HJC App to scan QR codes for quick pairing.

  • What should I do if I drop my helmet?

    HJC helmets are designed for a single impact. If dropped, the protective foam or shell may sustain non-visible damage. For your safety, the helmet should be replaced immediately after any significant impact.

  • Where can I download firmware updates for the SMART HJC intercom?

    Firmware updates and the HJC Device Manager software can be found on the official SMART HJC website (www.smarthjc.com).