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Nissan SR20 S14 S15 ITB Adapter – Blacktop / Silvertop Conversion
Nissan SR20 S14 S15 ITB Adapter Blacktop Silvertop Conversion by Velocity Race is designed for enthusiasts seeking improved airflow, stronger throttle response, and a more aggressive naturally aspirated setup. Developed with precision CNC machining and motorsport-focused engineering, this adapter allows installation of Toyota Blacktop or Silvertop ITBs onto Nissan SR20 platforms while maintaining proper fitment and smooth airflow transition.
For performance enthusiasts building unique SR20 setups, individual throttle body conversions have become a proven solution for achieving sharper engine response and a more engaging driving experience. The Velocity Race adapter is designed to simplify the process while maintaining a clean and professional installation.
Precision-machined from quality aluminum material, the adapter provides accurate mounting surfaces and optimized runner transition. Proper airflow characteristics are important in ITB conversions, and this design minimizes turbulence while supporting stable engine operation.
The Nissan SR20 S14 S15 ITB Adapter Blacktop Silvertop Conversion is suitable for naturally aspirated projects, street cars, circuit builds, track applications, and custom motorsport setups. Whether building a responsive weekend car or a dedicated race project, proper induction upgrades can significantly improve engine character.
Velocity Race develops automotive performance components with attention to durability, fitment, and function. Every design is developed for workshops and enthusiasts looking for performance-oriented solutions with straightforward installation compatibility.
The Nissan SR20 S14 S15 ITB Adapter Blacktop Silvertop Conversion allows builders to combine proven Toyota ITB designs with Nissan SR20 engines, creating a unique setup capable of delivering improved intake response and aggressive induction sound.
Worldwide shipping is available for customers and workshops building custom projects around the globe.
COMPATIBILITY
• Nissan SR20 S14 engines
• Nissan SR20 S15 engines
• Compatible with 4AGE 20V Blacktop ITB
• Compatible with 4AGE 20V Silvertop ITB
• Suitable for NA and performance builds
FEATURES AND BENEFITS
• CNC-machined aluminum construction
• Supports Blacktop and Silvertop ITB conversion
• Improves throttle response
• Smooth airflow transition design
• Strong and durable construction
• Suitable for performance applications
• Designed for motorsport and custom builds
• Precision-machined mounting surfaces
• Clean engine bay appearance after installation
MATERIAL AND FINISH
• Material: Aluminum
• Standard Finish: Brushed aluminum
• CNC-machined construction for accurate fitment
• Corrosion-resistant material suitable for long-term use
OPTIONS AVAILABLE
• Blacktop ITB adapter
• Silvertop ITB adapter
PACKAGE INCLUDES
• 1 × ITB adapter
• Necessary fittings and hardware only
Other accessories can be purchased separately.
IMPORTANT NOTE
• Aftermarket performance component by Velocity Race
• Not an OEM product
• ITBs and additional accessories are not included
• Please confirm compatibility before purchase
• Designed for custom performance applications
INSTALLATION
• Professional installation recommended
• ECU tuning required for optimal performance
• Custom piping or additional modifications may be required depending on setup
• Verify throttle linkage and clearance before final installation
WHY UPGRADE?
Converting to an individual throttle body setup offers a major improvement in engine responsiveness compared to conventional intake systems. Faster throttle reaction, stronger induction sound, and improved airflow characteristics create a more engaging driving experience. ITB conversions are popular among naturally aspirated performance builders seeking instant response and improved engine feel.
PERFORMANCE NOTES
Performance results vary according to engine setup, supporting modifications, ECU tuning, camshaft profile, intake design, and exhaust configuration. Proper tuning is strongly recommended after installation to maximize reliability and performance potential.
VELOCITY RACE QUALITY
Velocity Race focuses on CNC-machined automotive performance components designed for enthusiasts and workshops worldwide. Products are developed with emphasis on fitment accuracy, durability, and performance functionality.
APPLICATION AND UPGRADE POTENTIAL
Suitable for street builds, circuit cars, motorsport applications, weekend projects, and custom naturally aspirated SR20 setups. Common supporting upgrades include velocity stacks, standalone ECU systems, fuel system upgrades, intake fabrication, and supporting engine modifications.
Explore more Nissan intake and induction upgrades from Velocity Race.
Learn more about individual throttle body tuning and setup options.












