Skunk2 Ultra Race Series Billet Manifold | 17-23+ Civic Type R FK8 & FL5, 23+ Integra Type S DE5

Fits:

• 2017 - 2021 Honda Civic Type R FK8
• 2023+ Honda Civic Type R FL5
  
• 2023+ Acura Integra Type S DE5

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Built for serious boost and big-power K20C setups over 600whp, the Skunk2 Billet Ultra-Race Intake Manifold is engineered to outflow and out-strength the OEM plastic manifold when you start turning the pressure up. A larger, CFD-optimized plenum and tapered runners with trumpet-style entries help support higher horsepower builds while maintaining consistent airflow at elevated boost levels. 

Designed with high-output turbo combinations in mind, this manifold includes provisions for adding secondary port injection, making it an ideal foundation for builds that demand additional fueling headroom. The runners are CNC-machined from 6061 billet aluminum, paired with a cast aircraft-grade aluminum plenum and finished with Skunk2’s Ultra-Series nameplate.

A modular layout allows plenum volume changes via spacers and provides thick runner walls for additional porting—so you can tailor airflow and volume to match your exact setup and goals.

Key Features

• Tapered CNC billet 6061 aluminum intake runners

• Modular design with removable cast 3.5L plenum

• Includes 1L spacer (2L spacer sold separately)

• Thick runner walls allow for additional porting

• 90mm throttle body flange (standard 5.0L Ford bolt pattern)

• Provision for secondary fuel rail/injectors (sold separately)

• Ports: 4x 1/8” NPT, 2x 1/4” NPT, and 1x OEM AIT port

• Thermal gasket + mounting hardware included