The Turbosmart RacePort plumback piston assembly is a replacement internal piston for RacePort blow‑off valves intended to restore or modify valve response. As a direct RacePort service part, it supports rebuilds and tuning of valve operation without requiring a complete valve swap, making it a practical maintenance or upgrade item for existing Turbosmart RacePort valves.
Turbosmart BOV RacePort Plumback Piston Assembly