The Supertech SPRK‑TS1012‑NCA Dual Valve Spring Kit is designed to provide reliable valve control for high‑performance Nissan CA18DE and CA18DET engines. As RPM and boost levels increase, factory valve springs can struggle to maintain proper valve motion, leading to valve float and reduced engine reliability.

This dual spring configuration offers increased seat pressure and improved harmonic control, making it ideal for performance street, track, and competition builds. Supertech valve springs are precision‑engineered to maintain stability at high engine speeds while minimizing unnecessary valve train stress.

Key Features

• Dual valve spring design for improved valve control
• Suitable for high‑RPM and boosted CA18 engines
• Reduces the risk of valve float under aggressive cam profiles
• Manufactured from premium chrome silicon vanadium alloy
• Precision‑matched springs for consistent performance
• Designed to meet the demands of street, track, and motorsport use

Technical Specifications

• Seat Pressure: Approx. 73–82 lbs @ 35mm
• Maximum Valve Lift: Up to 15.0mm
• Spring Type: Dual spring

Recommended Use

• Upgraded camshaft installations
• High‑RPM naturally aspirated or turbocharged builds
• Performance street and track applications
• Engine rebuilds requiring improved valve train reliability

The Supertech SPRK‑TS1012‑NCA Dual Valve Spring Kit is a proven upgrade for CA18 engine builders seeking reliable valve control, durability, and confidence at elevated RPM levels.

Package Contents:

• 16 × Supertech SPR-RS1012 dual valve spring
• 16 × Supertech Ti valve spring retainer
• 16 × Supertech valve spring seat/locator