These are Radium Engineering's Fuel Rails. These have been designed with a large 0.69" internal bore, and they can support all necessary engine power requirements. The left and right fuel rails are identical and feature anodized aluminum bodies and mounting brackets. A great upgrade for those of you who are building a fuel system to supplement engines that are producing more power and performance. 

Radium Engineering Fuel Rail Kit

SPECS:

• Strong aluminum construction with an anodized black finish
• 0.69" internal bore
• Flows well enough to support all necessary engine power requirements 
• Left and right rails are identical
• Compatible with the factory or OEM equivalent fuel injectors
• Will include mounting brackets