Brian Crower Single Valve Spring and Steel Retainer Kit for Toyota 1JZ / 2JZ (BC0300S)

When building a high-performance JZ engine, maintaining precise valve control at elevated RPM is essential for both reliability and power. The Brian Crower Single Valve Spring and Steel Retainer Kit is engineered to provide the spring pressure and durability required to support aggressive camshaft profiles and sustained high-RPM operation.

Designed for applications up to 9,000 RPM and 800 wheel horsepower, this kit features PAC Racing valve springs manufactured from premium super-clean chrome silicone alloy using proprietary processing techniques to ensure consistent spring pressures and long-term reliability. Combined with durable steel retainers, the kit delivers excellent valvetrain stability while offering a cost-effective alternative to titanium retainers.

Whether you're upgrading a street-driven 1JZ-GTE or assembling a fully built 2JZ-GTE for drift, drag, or circuit use, this kit provides the valve control needed to unlock the full potential of your engine.

Trusted by professional engine builders and motorsport teams worldwide, Brian Crower valvetrain components are a proven upgrade for keeping Toyota’s legendary JZ engines performing reliably at high RPM.

Carefully selected for builders who demand proven performance without compromise.

Why Upgrade Your Valve Springs and Retainers?

Compared to factory valvetrain components:

✔ Increased spring pressure for improved valve control at high RPM
✔ Designed for up to 9,000 RPM and 800 WHP
✔ Prevents valve float with aggressive camshaft profiles
✔ Durable steel retainers for long-term reliability
✔ Trusted by professional engine builders worldwide

Key Features

✔ Genuine Brian Crower single valve spring and steel retainer kit
✔ PAC Racing springs manufactured from premium chrome silicone alloy
✔ High-strength steel retainers included (BC2300S-24)
✔ Designed for high-RPM and high-boost applications
✔ Compatible with OEM spring seats
✔ Suitable for street, drag, drift, and circuit builds

Technical Specifications

✔ Brand: Brian Crower
✔ Part Number: BC0300S
✔ Spring Type: BC1300 Single Spring
✔ Free Length: 1.690"
✔ Seat Pressure: 80 lbs @ 1.325"
✔ Open Pressure: 158 lbs @ 0.980"
✔ Coil Bind Height: 0.810"
✔ Retainers Included: BC2300S-24 Steel Retainers
✔ Spring Seat: OEM
✔ Maximum Net Cam Lift: 0.460" / 11.68 mm
✔ Maximum RPM: Up to 9,000 RPM
✔ Power Rating: Up to 800 WHP
✔ Material: Chrome Silicone Alloy
✔ Application: High-Performance Valvetrain Upgrade
✔ Engine Family: Toyota JZ-Series

Compatible Engines

✔ 1JZ-GE
✔ 1JZ-GTE
✔ 2JZ-GE
✔ 2JZ-GTE

Shipping

🇪🇺 EU Delivery: 5–10 Business Days
🌍 International Delivery: 7–21 Business Days