This is the Radium Engineering Top Feed Fuel Rail Upgrade w/Top Port. This kit will allow you to upgrade to a larger variety of fuel injector sizes while having a larger internal bore size needed to support all necessary engine power requirements. These rails are CNC machined from solid 6061 aluminum materials and are black anodized and laser-etched for a high-quality surface finish. These rails are designed specifically for OEM or equivalent fitment injectors. For injector height flexibility and thermal insulation, 2 sets of machined insulating spacers are included. All injectors must use 11mm diameter upper O-rings just like the OEM Subaru injectors. 

Radium Engineering Top Feed Fuel Rail Upgrade w/Top Port

SPECS:

• CNC machined from solid 6061 aluminum construction 
• Black anodized and aluminum etched
• Allows for a larger variety of aftermarket injectors
• 8AN ORB threaded ports
• 8AN top port design
• Will fit OEM-like or equivalent injectors
• Includes thermal insulating press-in spacers for injector height flexibility 
• Includes stainless steel M8 x 1.25 mounting bolts

NOTE:

•  All injectors must use 11mm diameter upper O-rings just like the OEM Subaru injectors
• These particular fuel rails will have the 8AN top port design