Brian Crower Heavy-Duty Valve Spring and Steel Retainer Kit for Toyota 1JZ / 2JZ (BC0300SHD)

When building a high-horsepower JZ engine, valvetrain stability becomes critical to maintaining reliable performance at elevated RPM and boost levels. The Brian Crower Heavy-Duty Single Valve Spring and Steel Retainer Kit is engineered to provide the increased spring pressure and precise valve control required for aggressive camshaft profiles and demanding motorsport applications.

Rated for applications exceeding 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 durability. Paired with high-strength steel retainers, the kit delivers exceptional valvetrain control and durability while offering a robust and cost-effective alternative to titanium retainers.

Whether you're assembling a high-revving 1JZ-GTE, upgrading a fully built 2JZ-GTE, or preparing a serious street, drift, drag, or circuit engine, this kit provides the reliability and performance required to support your build goals.

Trusted by professional engine builders and motorsport teams worldwide, Brian Crower valvetrain components are a proven upgrade for unlocking the full potential of Toyota’s legendary JZ platform.

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 superior valve control at high RPM
✔ Rated for applications exceeding 800 WHP
✔ Prevents valve float with aggressive camshaft profiles
✔ High-strength steel retainers for exceptional durability
✔ Trusted by professional engine builders worldwide

Key Features

✔ Genuine Brian Crower heavy-duty single valve spring 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: BC0300SHD
✔ Spring Type: BC1300 Heavy-Duty Single Spring
✔ Free Length: 1.690"
✔ Seat Pressure: 102 lbs @ 1.320"
✔ Open Pressure: 215 lbs @ 0.900"
✔ Coil Bind Height: 0.835"
✔ Retainers Included: BC2300S-24 Steel Retainers
✔ Spring Seat: OEM
✔ Maximum Net Cam Lift: 0.460" / 11.68 mm
✔ Power Rating: 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