ISR Performance Aluminum Modular Weld-On BOV Flange - Greddy Style BOV's

ISR Performance Modular Aluminum Greddy Style Blow Off Valve Flange. 

This flange is designed in 2 pieces. The bottom portion can be unscrewed, and welded to the pipe. Then the top piece can be threaded on. This makes for ease of welding and also give you the ability to switch between HKS or Greddy Style BOV's without rewelding.

Legal only for use in competition vehicles which may never be registered, licensed, and/or used on public streets or highways; and also for use in other exempted vehicles.