Brian Crower Valve Springs with Retainers
2005–2010 Scion tC / 2008–2015 Scion xB2 2.4L 2AZ-FE Engine
BC0340
Overview:
The Brian Crower Valve Springs with Retainers kit is engineered specifically for the 2.4L 2AZ-FE engine found in the 2005–2010 Scion tC and 2008–2015 Scion xB2 models. Designed to support high RPM operation, this kit enhances valvetrain stability and durability under demanding conditions. Ideal for enthusiasts seeking reliable performance upgrades, these valve springs and retainers provide consistent spring pressures that help maintain precise valve control during aggressive driving or track use.
Whether you are upgrading your camshaft or building a high-performance engine, Brian Crower’s valve springs deliver the necessary strength and precision to maximize your engine’s potential without requiring additional machining.
Key Features:
Brian Crower valve springs and retainers combine advanced materials and manufacturing techniques to ensure superior performance and reliability:
- Wound from premium chrome silicon alloy for exceptional strength and fatigue resistance
- Consistent spring pressures achieved through proprietary processing methods
- CNC-machined titanium retainers made from 6AL4V round bar titanium for lightweight durability
- Complete kit includes valve springs, titanium retainers, and seat kit for a full upgrade
- Spring seat pressure: 82 lbs at 1.300" installed height
- Open spring pressure: 188 lbs at 0.900" coil height
- Coil bind at 0.810" with no machine work required for installation
- Recommended for use with Brian Crower camshafts (sold separately) to optimize valvetrain performance
Construction & Design:
The valve springs are crafted from the highest grade chrome silicon alloy, known for its superior elasticity and resistance to heat and wear. This material choice ensures the springs maintain consistent pressure and resist fatigue even under prolonged high-RPM operation. The springs undergo proprietary processing to guarantee uniform tension and durability.
Complementing the springs, the retainers are precision CNC-machined from 6AL4V titanium, a lightweight yet incredibly strong alloy commonly used in aerospace applications. This reduces valvetrain mass, allowing for quicker valve response and improved engine efficiency. The titanium retainers also provide excellent corrosion resistance and longevity.
Installation & Fitment:
This valve spring kit is designed for direct fitment on the 2AZ-FE engine in the specified Scion tC and xB2 model years. Installation requires no additional machining or modifications, making it a straightforward upgrade for experienced enthusiasts or professional installers. The included seat kit ensures proper seating and alignment for optimal spring performance and reliability.
What's Included:
- Valve Springs (set)
- Titanium Retainers (CNC-machined)
- Seat Kit for proper installation
Ideal For:
This Brian Crower valve spring and retainer kit is ideal for Scion tC and xB2 owners who are upgrading their engine for higher RPM capability, improved valvetrain stability, and enhanced performance. It is especially suited for those installing performance camshafts or building engines intended for spirited street driving, autocross, or track use. The kit provides a reliable foundation for maintaining valve control under demanding conditions without sacrificing durability.
