Sprężyna blow off BOV Turbosmart TS-0204-2004 old Race Port - TS-0204-2004 - Turbosmart’s OLD Race Port Spring Kit is designed for Turbosmart’s lineup of Race Port Blow Off Valves (BOV). It provides a simple and effective way to customize the response characteristics of Turbosmart BO Vs. The kit contains three springs with different tensions, allowing you to fine-tune your BOV’s performance. In addition, Turbosmart also offers an optional spring preload adjuster, which can be used to further dial in your desired response. With the Turbosmart Race Port Spring Kit, you’ll be able to get the most out of your Turbosmart BOV. Whether on the racetrack or just around town, you’ll have complete confidence knowing that your BOV will provide the performance you need. Turbosmart’s OLD Race Port Spring Kit is a must-have accessory for Turbosmart BOV owners looking to get the best out of their setup. SUITABLE FOR Spring-Suit Turbosmart Raceport BOV Range (OLD).