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K-Tuned K-series Fuel Rail - EFI / 6AN Fittings

WARNING: Cancer and Reproductive Harm

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The K-Tuned multi-port fuel rail is by far one of the best looking rails on the market. Using positive customer feedback and the demand to expand their fuel system parts line-up, K-Tuned have added a center port to their popular K-series fuel rail. With many years of R&D and racing history, K-Tuned has designed this third port to be used as an optional 6AN or 8AN center port fitting can also be used as the fuel feed on stock or all motor engine set-ups to hide or “tuck” the line for the very popular stealth look. Their racing experience with turbo cars has taught them to never starve a rail on a boosted car. A common high HP setup will use a dual-feed system on both ends of the rail, with a center return.


  • CNC machined 6061 billet aluminum
  • Fully anodized in black or silver
  • 12.5mm (0.50”) bore diameter
  • 8AN inlet/outlet ports
  • Supports 1000+ whp
  • Compatible with stock and aftermarket injectors
EFI Fitting Applications: RSX, TSX, EP3, 2006-2015 Civic Si. This rail will match factory K-series cars hardline. Includes mounting bolts, 8AN port plug, and EFI fitting.
6AN Fuel Line Applications: All K-Series engines. Designed to be used with cars converted to use 6AN fuel lines. Compatible with most  K-Swaps. Includes mounting bolts, 8AN port plug, and 8AN to 6AN adapter.
Note: Fuel line is not included or fuel pressure gauge included. For DC5/EP3 and 8th/9th Gen Civic applications, click HERE. For K-Swap fuel lines, please click HERE. For fuel pressure gauge and center mount fitting click HERE & HERE.