CP Pistons Forged Pistons

2005–2010 Scion tC / 2008–2015 Scion xB (xB2) 2AZ-FE 2.4L

SC7455-4 / SC7456-4

Overview:

CP Forged Pistons are precision-engineered performance components designed specifically for the 2005–2010 Scion tC and 2008–2015 Scion xB (xB2) equipped with the 2AZ-FE 2.4L engine. These pistons offer a direct upgrade over OEM parts, delivering enhanced strength and durability for high horsepower builds. Ideal for enthusiasts and professional engine builders aiming to push their engines beyond stock limits, CP pistons maintain a reliable 9.0:1 compression ratio while supporting power levels exceeding 650 horsepower.

Available in both stock bore size (88.5mm) and a 0.5mm overbore (89mm), these forged pistons provide flexibility for engine rebuilds and modifications. Whether you are building a drag car, endurance racer, or a high-performance street machine, CP Forged Pistons deliver the strength and precision needed for demanding applications.

Key Features:

CP Forged Pistons combine advanced manufacturing techniques with thoughtful design to ensure superior performance and reliability. Key features include:

• High-strength aluminum forging for exceptional durability under extreme conditions
• Lightweight design to reduce reciprocating mass and improve engine response
• CNC machined to within 1 gram for precise balance and consistency
• Includes premium wrist pins engineered for strength and fitment
• Accumulator groove incorporated to enhance ring seal and reduce blow-by
• Double pin oilers to improve lubrication and reduce wear on wrist pins
• Complete piston ring sets included for a full rebuild solution
• Available in two bore sizes: 88.5mm (stock) and 89mm (0.5mm overbore)
• Maintains a 9.0:1 compression ratio for compatibility with stock and modified engines

Construction & Design:

Each CP Forged Piston is crafted from high-strength aluminum alloy using a forging process that significantly enhances the metal’s grain structure. This results in pistons that are far stronger and more resistant to fatigue than cast OEM pistons. The forging process also allows for a lighter piston design, reducing reciprocating weight and improving engine efficiency.

Precision CNC machining ensures tight tolerances and consistent weight across all pistons in the set, which is critical for balanced engine operation at high RPMs. The inclusion of an accumulator groove and double pin oilers reflects CP’s attention to detail in optimizing ring seal and wrist pin lubrication, contributing to longer engine life and improved performance.

Installation & Fitment:

CP Forged Pistons are designed as direct replacements for the factory pistons in the 2AZ-FE 2.4L engine found in the Scion tC (2005–2010) and Scion xB (xB2, 2008–2015). Installation requires standard engine rebuild procedures and may necessitate honing or boring the cylinder walls to match the selected piston bore size (stock 88.5mm or 89mm overbore).

These pistons are built to order with a lead time of 6–8 weeks, ensuring each set meets exacting quality standards. Professional installation is recommended to ensure proper clearances and optimal engine performance.

What's Included:

• Set of 4 forged pistons (SC7455-4 for 88.5mm bore or SC7456-4 for 89mm bore)
• 4 sets of piston rings matched to piston size
• 4 wrist pins
• 4 wrist pin locks

Ideal For:

These CP Forged Pistons are ideal for Scion tC and xB owners who are building high-performance engines requiring enhanced strength and durability. They are perfect for:

• High horsepower street builds
• Drag racing and motorsport applications
• Endurance and track racing engines
• Engine rebuilds requiring overbore options
• Anyone seeking a reliable upgrade over OEM pistons for the 2AZ-FE engine

CP Pistons (CP‑Carrillo) manufactures high-performance engine internals for serious builds, specializing in pistons engineered for demanding street and racing use. With an emphasis on precision manufacturing, their pistons are commonly chosen for boosted, high-compression, and competition applications where strength, consistency, and ring seal matter.