redline shim kitThe Redline Poppet shim kit allows you to customize the airflow through your Polarstar Poppet. You can swap or combine the color coded shims to achieve the ideal airflow. The Redline Poppet shim kit gives you all the benefits of a low flow Poppet, with the added benefit of shorter poppet dwell times and more possible air flow configurations. By adding a shim, you increase the distance to your Poppet, which reduces the travel. Reducing the Poppet