TC Bros Primary Plug Kit For Harley Softail Designed for seamless integration with TC Bros. Pro Series mid controls on M8 Softail models initially equipped with OEM mid controls, the TC Bros. Primary Plug Kit offers an optimal solution. Precision CNC machined in the USA from premium materials, it efficiently seals the shifter shaft hole in the factory primary without necessitating fluid drainage. This simplifies installation and maintains the integrity of your motorcycle's primary case. Features: CNC machined from strong and lightweight 6061-T6 aircraft grade aluminum Black anodized finish for great looks and corrosion resistance Simple installation requires no removal of primary covers or draining of fluids Made in the USA