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Our Price: $139.95

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Click here to download installation instructions (PDF).


The fuel rail ports are tapped for 8AN ORB and 1/8 NPT.

8AN ORB Adapter Fittings can be found HERE.
8AN ORB Direct Mount Regulators can be found HERE.
8AN ORB Fuel Pulse Dampers can be found HERE.
1/8 NPT Adapter Fittings can be found HERE.
Fuel Pressure Gauge Adapters can be found HERE.

Appropriate fittings must be selected based on the specific application. Ample space around the fuel rail port(s) is necessary for larger accessories such as fuel pressure regulators, fuel pressure gauges, and fuel pulse dampers. To verify clearance, the dimensional drawings on the product pages can be used as a reference guide.

This large bore fuel rail features a large 0.69" diameter internal bore. This is the largest S2000 fuel rail bore on the market that uses all 5 crucial OEM mounting bosses. The fuel rail is machined, anodized, and laser etched for a high quality surface finish. It is compatible with all fuel types including popular alcohol mixtures such as E85. 

The port layout is shown in the graphic above. The factory regulator can be used in the triangular area, or the port in that location can be blocked off with a 1/8NPT plug or fuel pressure gauge/transducer. The middle of the rail features a unique connection for the OEM feed hose on the 04-05 S2000, but the feed hose from the 00-03 models can be connected here using Honda part number 16623-PCX-003. If the OEM feed hose is not going to be used, a small block off plate is included to seal this passage, shown below.
This kit eliminates the OEM fuel rail cover and also replaces the air pump system hard tubes with vacuum hose for a cleaner appearance.  


20-0091-02 Fuel Rail, S2000, 00-05

This basic setup does not include fittings. Replacement vacuum tubing is included to simplify and eliminate the hard lines.  

20-0091-01 Fuel Rail Kit, S2000, 00-05

This option includes everything from the 20-0091-02 fuel rail kit with the addition of a -6AN PTFE hose connection to replace the restrictive OEM banjo fitting. Also included are fittings for all 3 ports as well as a special inverted flare adapter fitting that connects to the OEM hard line near the firewall. The high quality PTFE hose is compatible with E85, ethanol, alcohol, gasoline, etc. The included billet block-off plate will be used to cap the stock banjo feed port. Nothing else is required for this kit.

20-0091-PK Fuel Rail Kit, S2000, 00-05
The plumbing kit includes the items shown in the image below.


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