Volkswagen/Audi fuel rails generally become a flow bottleneck when injector flow greater than 440cc is required. Designed for stock* or USRT SRI manifolds, our fuel rails are machined from aluminum extrusions and then polished to a fine luster. The 1/2" i.d. fuel passage holds enough volume to eliminate fuel pressure fluctuations that will occur when running big injectors on lesser rails. Ends are tapped with -6AN threads which can accept your choice of fittings. Mounting tabs are included for an easy installation with stock hardware.
Use our precision-fabricated adaptors to fit stock fuel pressure regulators for an inexpensive and OEM-clean set up.