HKS Step 2 High Compression FA24 Short Block

2022–2026 Toyota GR86 / 2022–2026 Subaru BRZ 2.5L FA24 Engine

23011-AT008

Overview:

The HKS Step 2 High Compression FA24 Short Block is a premium engine upgrade designed to elevate the performance of your Toyota GR86 or Subaru BRZ equipped with the FA24 engine. This 2.5-liter short block features upgraded high-strength machined connecting rods, forged pistons, and a forged crankshaft, delivering enhanced durability and power potential over the stock configuration and the Step 1 upgrade.

Engineered for enthusiasts who demand precision, reliability, and increased performance, this short block is ideal for both naturally aspirated and turbocharged builds. Developed through HKS’s extensive motorsport experience, it offers improved torque, throttle response, and a robust foundation for aggressive tuning and high-power applications without compromising drivability.

Key Features:

This short block incorporates advanced engineering and high-quality materials to ensure maximum strength and reliability under demanding conditions:

• Forged High-Compression Pistons: Designed for enhanced strength and optimized combustion efficiency to increase power output.
• High-Strength I-Beam Connecting Rods: Machined for precision and engineered to withstand higher torque loads, providing durability for aggressive tuning.
• Forged Crankshaft: Offers increased stroke and stability, ensuring reliable performance during high-stress operation.
• Heavy-Duty Bearings: Built to endure extreme stress and extend engine longevity under high-performance conditions.
• Crank Key Included: Essential for secure assembly and maintaining proper engine timing.
• Increased Displacement: Bore of 94.0mm and stroke of 90.0mm increase engine displacement to 2,498cc, delivering more torque and improved throttle response.
• Compression Ratio Options: Multiple compression ratios available (12.2, 11.8, and 11.3) to suit different tuning and fuel requirements.
• Compatibility: Suitable for both naturally aspirated and turbocharged applications, with Step 2 highly recommended for forced induction setups.

Construction & Design:

The HKS Step 2 Short Block is crafted with meticulous Japanese craftsmanship and motorsport-grade materials. Forged components such as pistons and crankshaft ensure superior strength and durability. The high-strength I-beam connecting rods are machined for exact tolerances, enhancing reliability under high torque and RPM conditions. Heavy-duty bearings are incorporated to withstand the increased stresses of performance driving and tuning.

This short block is engineered to provide a solid and reliable foundation for engine builds that demand both power and longevity, whether naturally aspirated or turbocharged.

Installation & Fitment:

This short block is designed as a direct replacement for the factory FA24 engine block in 2022–2026 Toyota GR86 and Subaru BRZ models. It fits seamlessly with existing engine components and mounting points, providing a straightforward upgrade path for enthusiasts looking to increase displacement and strength.

Installation requires professional engine assembly and tuning to optimize performance and ensure reliability. Step 2 is especially recommended for builds involving forced induction to handle the additional power safely.

What's Included:

• Forged high-compression pistons
• High-strength machined I-beam connecting rods
• Forged crankshaft
• Heavy-duty engine bearings
• Crank key for assembly

Ideal For:

• Performance enthusiasts upgrading their FA24 engine for increased displacement and strength
• Builders pursuing naturally aspirated or turbocharged high-power setups
• Motorsport applications requiring durable and reliable engine internals
• Owners seeking improved torque, throttle response, and engine longevity