Spool IFX350 Upgraded DI Injectors (+30%) - BMW S58

Spool Performance proudly introduces the IFX 350 , the pinnacle of Direct Injection (DI) injector technology for the S58 platform . These injectors are engineered for enthusiasts who demand unparalleled performance while preserving OEM-like engine reliability and control. Designed to integrate seamlessly with the factory DI system, the IFX 350 maintains smooth idle and low-load behavior, ensuring your engine’s integrity remains uncompromised, even at extreme power levels. Key Features: Enhanced Flow: A substantial 30% increase in flow rate over stock injectors. High-Pressure Operation: Delivers consistent, reliable fuel flow at pressures up to 390 bar for superior atomization and efficient combustion. OEM-Like Behavior: Maintains factory idle and low-load characteristics, eliminating the need for supplemental fuel systems.

Fits: BMW S58: M3 (G80/G81), M4 (G82/G83), M2 (G87), X3 M (F97), X4 M (F98)

Brand: Spool Performance

• Ships from the brand or distributor, usually in 3–7 business days.
• Free US shipping on orders over $250.
• Unused parts can be returned within 30 days. Some items are marked no-refund in their description.

Full details are on our shipping and returns page.