SMY Top Feed Aluminum Black Fuel Rails Subaru WRX 2002-2014 / STI 2007-2021

Part #: SMY - FRL - BK. The factory fuel rails work well for lower - power setups. But as you boost your horsepower, the stock fuel system can't keep up. That's where our SMY fuel rails come in! They're engineered to deliver the maximum amount of fuel and offer a perfect OEM - style fit. Crafted from solid billet 6061 aluminum and anodized in a sleek gloss black finish, these rails are built to last. With a 5/8' diameter through - hole and threads for - 8 O - Ring Boss fittings, they ensure smooth fuel flow. You can use the provided Allen head bolts or your stock hex head bolts. What makes our rails stand out is the unique slotted design. Features include an engraved SMY logo, a custom slotted rail design for top - feed fuel systems, being made in the USA, and coming with a lifetime warranty. Specs: Machined from billet 6061 aluminum, compatible with E85 fuel, and threaded for - 8 O - Ring Boss fittings. Each kit includes a pair of black rails, 4 stainless - steel screws, and 4 stainless - steel washers. Fitment: 2002 - 2007 WRX (requires replacing side - feed injectors with top - feed injectors), 2007 STI, 2008 - 2014 WRX, 2008 - 2014 STI, 2015 - 2021 STI, and 2008 - 2012 Legacy.

Using these SMY fuel rails is straightforward. First, make sure your vehicle is in the fitment list. If you have a 2002 - 2007 WRX, replace the side - feed injectors with top - feed injectors before installation. You can choose to use the supplied Allen head bolts or your stock hex head bolts to attach the rails. When installing, ensure that the - 8 O - Ring Boss fittings are properly threaded. This will help maintain a good fuel flow. As for maintenance, since these rails are made from billet 6061 aluminum and anodized, they're quite durable. But it's a good idea to check the fittings regularly for any signs of wear or leaks. Also, because they're compatible with E85 fuel, make sure to use the right fuel according to your vehicle's requirements. With the lifetime warranty, you can have peace of mind knowing that SMY stands behind their product.