Billet Performance Products Nissan R33 RB25DET Non-NEO fuel rail kit is a direct bolt-on billet rail designed for 14mm top-feed injector conversions.It suits RB25 builds where the factory rail is no longer ideal for injector upgrades, aftermarket ECU control or higher fuel demand. This is a practical choice for street, drift, drag and track RB combinations using larger injectors, braided hose, AN fittings and upgraded fuel system hardware.Features MPN: BPP8010 Fitment: Nissan R33 RB25DET Non-NEO Injector style: 14mm top-feed injectors Injector compatibility: Supports common EV14K and EV14 style injector lengths with supplied adaptors Construction: CNC-machined 6061-T6 billet aluminium Rail bore: 16mm internal bore Finish: Type II bright dip anodised finish Typical Applications Nissan R33 RB25DET Non-NEO fuel system upgrades Street, drift and drag RB builds Top-feed injector conversions with aftermarket ECU tuning High-flow EFI fuel systems using AN fittings and braided hose Fitment Notes Suits Nissan RB25DET Non-NEO applications Designed for 14mm top-feed injectors Not for RB25 NEO engines Confirm injector length and intake manifold layout before installation