IAG Performance

Stage 2 FA20 86.25mm Short Block Assembly

$5,249.99

SKU: IAG-ENG-1210

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return

Description

The IAG Performance IAG-ENG-1210 is a Stage 2 FA20 short block, engineered for high-performance applications and rated for up to 600 BHP. This assembly utilizes brand new OEM Subaru BRZ FA20 case halves, meticulously bored and honed to 86.25mm. Enhancements include internal modifications to the case for improved oiling, ensuring better lubrication under demanding conditions. Key internal components include IAG-Spec 86.25mm forged pistons with a 12.5:1 compression ratio, paired with IAG-Spec H-beam connecting rods featuring ARP2000 rod bolts for superior strength and reliability. The short block is equipped with ACL or KING XPG rod bearings and King XPG main bearings to handle increased stress. A new Subaru FA20 WRX/BRZ crankshaft is included, along with standard Subaru case bolts. For convenience, an OEM oil plug is pre-installed at the oil pan location. This short block is specifically designed for the GT86, BRZ, and FRS models. As a performance engine component, professional installation and subsequent tuning are highly recommended to achieve optimal results and ensure engine longevity.

Fitment

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Specifications

BrandIAG Performance
Part NumberIAG-ENG-1210
CategoryEngines and Components

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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