Perrin 08-15 Subaru STi Black Fuel Rail Top Feed Style Kit (perPSP-FUL-203BK)

Regular price $516.80 USD Sale price $516.80 USD Regular price $640.00 USD
Sale 19.25% $123.20 USD (19.25%)
Special order - Ships in 5+ weeks
Product Description

Large volumes of gasoline are distributed evenly to each cylinder by the PERRIN Top Feed Fuel Rails. Consumers will notice the car runs smoother and is more powerful when large injectors are used, and tuners can safely push the engine closer to the limit. For optimal fuel flow, PERRIN High-Flow Fuel Rails include large interior diameter channels. Cars may now operate at 800 WHP without experiencing fluctuating fuel delivery to each cylinder. To ensure a proper connection to the hose, we supply specially manufactured -6 barbed fittings with O-rings. Because these fittings are detachable, aftermarket fuel lines can be easily customized.

Your high-powered Subaru may produce more power while being safer thanks to the equal-flowing nature of PERRIN fuel rails. A requirement for any vehicle aiming for 400 horsepower or more. To ensure that all cylinders receive an equal distribution of fuel, pressure, and air/fuel ratio, PERRIN High-Flow Gasoline Rails partition the incoming fuel. The factory-installed fuel rails distribute fuel to each injector in turn as it passes through the engine compartment. This significantly decreases fuel supply to the final injector in line with modified Subarus. The 6061 billet aluminum fuel rails and distribution block for the PERRIN engine are precisely CNC machined. Each -6 Barbed Fitting is easily customizable for aftermarket gasoline lines thanks to its detachability from the distribution block and rails.

A built-in phenolic spacer is included with every PERRIN High-Flow Fuel Rail. Fuel rails and junction blocks are installed with spacers that are placed between them and the engine to insulate it from heat. As a result, fuel remains more closely at room temperature. Contrarily, without these spacers, fuel temperatures can be shown to rise by much higher than 30 degrees above ambient. Large 3/8" inner diameter fuel injection hoses on PERRIN fuel rails enable them to deliver higher flow rates than competing systems. This hose has a capacity of more than 800 WHP. A rubber fuel injection hose with the appropriate liners for zero emissions is part of the package. The rubber used to make the hose has the added benefit of helping to attenuate pressure waves, which results in smoother and more stable fuel pressure. Perrin Flexguard is woven ballistic nylon with a high abrasion strength and heat resistance that helps prevent hose damage during vehicle operation. designed with a heat- and flame-resistant coating for use in applications up to 260 degrees Fahrenheit continuously. Race cars all over the world utilize hose covers of this design.

Also, the Oetiker clamps are included with PERRIN High-Flow Fuel Rails. Oetiker clamps provide a tight fit because there are no gaps in the band, which improves the seal; unlike conventional worm drive clamps, their clamping mechanism won't corrode with time. With just one squeeze of the Oetiker crimping tool, they are also significantly simpler to install.




  • Subaru STi (2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015)




  • (2) PERRIN Fuel Rail bodies
  • (1) PERRIN Fuel Rail junction block
  • (6) 3/8"Aluminum -6 AN connectors
  • (2) 5/16"Aluminum -6 AN connectors
  • (5) Phenolic spacers
  • (1) 10' 3/8" ID Fuel injection hose
  • (1) 4' 5/16" ID Fuel injection hose
  • (1) 3' 1/4" ID Fuel hose
  • (1) 10' 0.67" ID Flexgaurd cover
  • (8) O-rings
  • (16) Oetiker clamps
  • (2) 3/8" Plastic T connectors
  • (2) 1/4" Plastic T connectors
  • (2) 1/4"-1/4" Plastic connectors
  • (1) 5/16" Fuel quick connector
  • (2) 3/8" Plastic Y connectors
  • (5) M8 Socket cap screws
  • (1) M6 Short arm hex key
  • (1) PERRIN License Plate Frame
  • Warranty & Instructions

To provide faster delivery and turn around time; Kami Speed ships products out from different warehouses throughout the United States. Usually averaging 1-4 business days for processing prior to shipping.

Depending on the package, we ship using different carriers according to the item's location, content, and size.

Freight truck & international items, will require up to 7 business days to ship due to size and logistics.

All orders made after 3:00pm ET will be shipped or processed the next business day.

Unless otherwise noted as "In Stock" or exact ETA. Special Order items have an ETA of 5+ weeks.

Orders over $500 will ship insured and over $1,000 with signature and insurance in order to guarantee delivery. Orders over $1000 may not be able to ship to a different address not listed as the billing address or confirm payment address from the form of payment used. Orders with suite numbers, different billing, or apartment numbers will require signature if valued over $100.

All international orders outside of the USA are subject to duties and taxes fees per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.

Processing and logistics on in stock international orders can take up to 7 business days to process & ship.

In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail. All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to

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