The HJ-37 Gear Plate Set is a replacement set specifically crafted for the HJC RPHA 91 helmet, designed to keep the helmet’s face shield securely in place and operating smoothly. This gear plate set includes all necessary components to restore the locking mechanism, ensuring that the shield can open and close with precision. Over time, these small parts can experience wear, affecting the helmet’s functionality and fit. Replacing them is a straightforward solution to maintain your helmet’s performance and ensure reliable protection.