This 1989-2002 Nissan Skyline GT-R fuel rail kit is designed specifically for OEM (R32/R33/R34) RB26DETT intake manifolds. Manufactured with a large 0.69" internal bore, the fuel rail can support all necessary engine power requirements. The rail is CNC machined from a custom 6063 aluminum extrusion and black anodized and laser etched for a high quality surface finish. 
For thermal insulation, press-fit machined phenolic spacers and washers are included to completely isolate the fuel rail from heat transfer via the manifold and mounting bolts, as shown.