Radium Port Injection Fuel Rail Kit - Honda Civic Type-R FK8 (2017-2021) / FL5 (2022+)

Suits:

• 2017-2021 Honda Civic Type-R — FK8 (K20C)
• 2022+ Honda Civic Type-R — FL5 (K20C)

The Radium Engineering Port Injection Fuel Rail Kit adds port injection capability to the direct injection K20C engine found in the Honda Civic Type-R FK8 and FL5. By supplementing the factory direct injection system with port injection, this kit enables E85 compatibility and significantly increases total fuel delivery capacity for high-horsepower forced induction applications where direct injection alone cannot meet fuel flow demands.

Note: Port injectors, fuel pump, and ECU tuning are required and sold separately. Professional installation and tuning is recommended.

Features

• Adds port injection to the factory direct injection K20C engine
• CNC-machined billet aluminium fuel rails
• Anodised finish for corrosion resistance
• Compatible with gasoline, E85, and all alternative fuel types
• All necessary mounting hardware included
• Complete kit — no additional rail components required

Required (sold separately):

• Port fuel injectors
• Supplemental fuel pump
• ECU tuning for dual injection strategy

Part Number:

• 20-0428 — Radium Port Injection Fuel Rail Kit (Honda Civic Type-R FK8 / FL5)

Why Radium Engineering?

• ✅ Manufactured in the USA to motorsport-grade tolerances
• ✅ CNC-machined billet aluminium components built for performance and longevity
• ✅ Trusted by high-power build tuners and race teams worldwide
• ✅ Bolt-on fitment — no cutting, drilling, or fabrication required
• ✅ Compatible with E85, pump petrol, and flex fuel sensor integration