The HJC F31 is a lightweight motorcycle helmet designed for riders who want dependable protection, comfortable fit, and effective ventilation in a streamlined package. This medium-size helmet features an Advanced Fiberglass Composite (AFC) shell for a balance of strength and reduced weight. The solid semi-flat black finish provides a clean, understated appearance suitable for everyday street riding and touring.
Fitment: The HJC F31 is intended for motorcycle and powersports riders seeking a full-coverage helmet with a secure Double-D ring pull-tab closure. Its interchangeable cheek pads can be used across all helmet sizes, while the removable and washable crown and cheek pads make it easier to maintain a clean, comfortable interior. The moisture-wicking, quick-drying, odor-free interior lining helps manage perspiration during extended rides.
The HJ-43 visor is Pinlock prepared, anti-scratch coated, and provides 99% UV protection for improved visibility and eye comfort. A dynamic multi-step sun shield allows riders to adjust coverage for changing light conditions. The helmet is also ready for the SMART HJC 2nd Generation 11B, 21B, and 50B Bluetooth communication systems, which are sold separately.
Advanced Channeling Ventilation System (ACS) technology uses three intake vents and one exhaust vent to promote full front-to-back airflow. This ventilation design helps move heat and humidity away from the rider’s head for greater comfort. The HJC F31 Medium is identified by manufacturer and vendor part number JA21NUS5XBSV.
Features:
- Shell: Advanced Fiberglass Composite construction for strength and reduced weight
- Closure: Double-D ring pull-tab fastening system
- Sun Shield: Dynamic multi-step internal sun shield for adjustable coverage
- Communication Ready: Compatible with SMART HJC 2nd Generation 11B, 21B, and 50B Bluetooth systems, sold separately
- Interior: Moisture-wicking, quick-drying, odor-free liner with removable and washable crown and cheek pads
- Cheek Pads: Interchangeable between all helmet sizes
- Visor: HJ-43 Pinlock prepared, anti-scratch coated, and provides 99% UV protection
- Ventilation: Advanced Channeling Ventilation System with three intakes and one exhaust for front-to-back airflow
- Color: Semi-flat black solid finish
- Size: Medium
- Model: F31
- Brand: HJC
- Manufacturer Part Number: JA21NUS5XBSV
- Vendor Part Number: JA21NUS5XBSV