Brian Crower Single Spring & Titanium Retainer Kit
2013–2017 Subaru BRZ / 2017 Toyota 86 4UGSE
BC0650
Overview:
The Brian Crower Single Spring & Titanium Retainer Kit is a precision-engineered valve spring upgrade designed specifically for the Subaru BRZ (2013–2017) and Toyota 86 (2017) equipped with the 4UGSE engine. This kit replaces the factory dual spring setup with a high-performance single spring system paired with lightweight titanium retainers, delivering enhanced valvetrain stability and durability under demanding conditions. Ideal for enthusiasts seeking improved engine response and reliability during spirited driving or track use, this kit helps maximize the potential of your naturally aspirated boxer engine.
Brian Crower’s reputation for quality and performance is evident in this kit, which is engineered to withstand higher RPMs and aggressive cam profiles while reducing valvetrain mass. This upgrade is a smart choice for those upgrading their camshafts or building a performance-oriented Subaru BRZ or Toyota 86.
Key Features:
This valve spring and retainer kit offers a range of benefits tailored to performance applications:
- Single high-performance valve spring design reduces complexity and weight compared to dual springs
- Titanium retainers significantly lower valvetrain mass for improved engine response and higher RPM capability
- Engineered specifically for the Subaru BRZ and Toyota 86 4UGSE engine for precise fitment and reliability
- Enhanced spring rates provide superior valve control under aggressive camshaft profiles and high RPM operation
- Durable materials and manufacturing processes ensure long-lasting performance and resistance to fatigue
- Compatible with stock and aftermarket cylinder heads without modification
- Designed to support both street performance and track-day driving demands
Construction & Design:
The Brian Crower kit features premium-grade valve springs manufactured to exacting tolerances for consistent spring pressure and durability. The single spring design simplifies the valvetrain while maintaining optimal valve control, reducing the risk of coil bind and valve float. The titanium retainers are precision-machined from aerospace-grade titanium alloy, offering exceptional strength-to-weight ratio and corrosion resistance. This combination reduces reciprocating mass, allowing the engine to rev more freely and reliably at higher RPMs.
Every component undergoes rigorous quality control to ensure fitment accuracy and performance consistency. The springs are shot-peened and heat-treated to enhance fatigue life, making this kit a reliable upgrade for performance enthusiasts.
Installation & Fitment:
This kit is a direct fit replacement for the factory valve springs and retainers on Subaru BRZ models from 2013 through 2017 and Toyota 86 models from 2017 equipped with the 4UGSE engine. Installation requires standard valve spring compressor tools and mechanical knowledge of cylinder head disassembly. No modifications to the cylinder head or valves are necessary, ensuring a straightforward upgrade process. Proper installation torque and valve lash settings should be followed to guarantee optimal performance and longevity.
What's Included:
- Set of high-performance single valve springs
- Matching titanium valve retainers
- Valve spring seats
- Installation instructions
Ideal For:
This Brian Crower Single Spring & Titanium Retainer Kit is ideal for Subaru BRZ and Toyota 86 owners who are upgrading camshafts, building performance engines, or seeking improved valvetrain stability for spirited street driving and track use. It is especially beneficial for those pushing their naturally aspirated 4UGSE engines to higher RPMs or installing aggressive valve timing components.
