Down Under Performance Head PipeThe Trask Down Under Performance Head Pipe is designed for riders who demand performance, durability, and precision fitment. Built to outperform stock systems, this head pipe delivers superior flow, increased horsepower, and long lasting reliability. Stainless Steel construction which is TIG welded and purged to ensure smooth airflow and maximize strength. Unlike stamped factory parts, the machined port flanges provide a tighter, more positive seal at