Aeromotive High Flow, Billet Fuel Rails combine 3,000 HP flow capabilities with ?bolt-on? ease of installation. Fits 2004-2006 Subaru 2.0L WRX?? Rails Only. Top Feed. ORB-08 Ports with compact connections and positive, leak-free sealing. Full 5/8' ID through bore, capable of supporting up to 3,000 HP. Fully compatible with -10 AN line if combined with custom ORB-08/AN-10 adapter P/N 15641. Full size ports at each end for optimal injector supply and minimal hydraulic fluctuation. Additional inlet/outlet ports are provided where required for plumbing convenience. CNC-machined, billet aluminum construction for unequaled fit and finish. Steel mounting brackets, custom engineered for each application, combining a solid, durable mounting platform with correct fit and ?bolt-on? ease of?installation. Red, Type II bright dip anodized finish that looks great and protects against corrosion.