HKS 2.5L Step 1 High Compression FA24 Short Block 2022-2024 BRZ / 2022-2024 GR86

Take your FA24 engine to the next level with the HKS 2.5L Step 1 High Compression Short Block, engineered for enthusiasts who demand performance, durability, and precision. Developed using HKS’ decades of motorsport expertise—from D1 Drift to Tsukuba Time Attack—this short block is the result of extensive research, meticulous testing, and Japanese craftsmanship.

This upgrade increases engine displacement to 2.5 liters, delivering more torque, improved throttle response, and a solid foundation for naturally aspirated or turbocharged builds. Designed to handle aggressive tuning and high-power applications, this short block ensures maximum reliability without sacrificing drivability.

Features:

• Forged High-Compression Pistons – Enhanced strength and optimized for increased efficiency and power.

• High-Strength I-Beam Connecting Rods 

• Forged Crankshaft – Provides durability and stability for increased stroke and reliable performance.

• Heavy-Duty Bearings – Built to withstand extreme stress for long-term reliability.

• Crank Key Included – Essential for secure assembly and proper timing.

Compatibility:

• Designed for both NA and turbocharged applications (Step 2 is highly recommended for forced induction setups).

Specifications:

• Bore: 94.0mm
• Stroke: 90.0mm
• Displacement: 2,498cc

Compression Ratios:

• 0.6mm (Stock): 12.2
• 0.8mm (grommet type): 11.8
• 1.2mm (grommet type: 11.3