Brian Crower Stroker Kit

2005–2010 Scion tC / 2008–2015 Scion xB2 2AZ-FE Engine

BC0348 / BC0349

Overview:

The Brian Crower 2AZFE Stroker Kit is a premium engine upgrade designed specifically for the Scion tC (2005–2010) and Scion xB2 (2008–2015) models equipped with the 2AZ-FE engine. This stroker kit increases the engine displacement from the stock 2.4L to a robust 2.6L, delivering significant gains in horsepower and torque. Ideal for enthusiasts seeking to enhance engine performance without compromising reliability, the kit offers a balanced approach to power and durability.

By incorporating a longer 102mm stroke crankshaft and high-quality forged components, the Brian Crower stroker kit transforms the 2AZ-FE engine into a more potent powerplant, capable of supporting aggressive tuning and higher output levels. This kit is perfect for those looking to extract more performance from their Scion while maintaining OEM-level fitment and operation.

Key Features:

The Brian Crower 2AZFE Stroker Kit combines advanced engineering and premium materials to ensure maximum performance and reliability. Key features include:

• 4340 billet steel crankshaft with a 102mm stroke for increased displacement
• Choice of BC 4340 Sportsman or Pro Series H-beam connecting rods for strength and durability
• Custom forged aluminum pistons from CP or JE, available in any bore size and compression ratio
• 5100 Series carbon steel alloy wrist pins with optional 9310 Series upgrade for enhanced strength
• Ductile iron plasma top rings, tapered second rings, and low-tension oil rings for optimal sealing and reduced friction
• Fully system balanced components for smooth operation and longevity
• Compatible with Darton sleeved blocks to safely accommodate up to a 90mm bore, achieving 2.61L displacement
• Available with either BC625+ or Sportsman connecting rods to suit different performance needs

Construction & Design:

The Brian Crower stroker kit is engineered with precision and built from high-grade materials to withstand the rigors of increased engine output. The crankshaft is crafted from 4340 billet steel, known for its exceptional strength and fatigue resistance. Connecting rods are forged from 4340 steel and designed in an H-beam configuration, providing superior rigidity and durability under high stress.

Custom forged pistons from CP or JE ensure lightweight yet robust components that can be tailored to specific bore sizes and compression ratios, allowing for flexible tuning options. The wrist pins and ring packs are selected to optimize sealing, reduce friction, and improve overall engine efficiency. Every component is balanced as a system to minimize vibrations and promote smooth engine operation.

Installation & Fitment:

This stroker kit is a direct fit upgrade for the 2AZ-FE engine found in the 2005–2010 Scion tC and 2008–2015 Scion xB2 models. Installation requires professional engine assembly skills and standard machine shop services such as boring and honing if increasing bore size. The kit is designed to work with Darton sleeved blocks for larger bore applications, ensuring safe and reliable operation at increased displacement.

While the kit is balanced and ready to install, it is recommended to use compatible high-performance bearings such as ACL race bearings, which are available separately. Proper tuning and supporting modifications are advised to maximize the benefits of the increased displacement and forged internals.

What's Included:

• 4340 billet steel crankshaft with 102mm stroke
• BC 4340 H-beam connecting rods (either BC625+ or Sportsman series)
• Custom forged aluminum pistons (CP or JE) with wrist pins
• Complete piston ring set including ductile iron plasma top rings, tapered second rings, and low-tension oil rings
• Full system balancing of all rotating assembly components

Ideal For:

The Brian Crower 2AZFE Stroker Kit is ideal for Scion tC and xB2 owners who want to significantly increase engine displacement and performance while maintaining reliability. It suits enthusiasts building street performance engines, track cars, or mild to moderate forced induction setups. This kit is perfect for those seeking a durable, high-quality foundation for further engine tuning and upgrades.

Brian Crower (BC) supplies performance engine internals and valvetrain components aimed at serious builds, including stroker kits and rotating assemblies. Known for system-matched parts designed to work together, BC products are a go-to for enthusiasts chasing more displacement, higher RPM capability, and stronger bottom-end reliability in high-output street or track applications.