WRX Forged FA20 Long Block - Boosted Engineering

The Boosted Engineering BE650 FA20DIT Forged Long Block starts with a brand-new OEM Subaru FA20DIT shortblock, upgraded with forged pistons, forged rods and race-grade rod bearings.
Built for boost and daily-driven reliability, this engine is designed to support 650bhp with the right setup.

Ideal for WRX owners chasing reliable power increases in street performance builds or dedicated high-boost setups.

Key Build Features

• Brand-new OEM Subaru FA20DIT shortblock

• Forged pistons (DIT compression spec)

• Forged I-beam rods

• Race-grade bearings

• ARP 11mm head studs

• MLS head gasket

• Upgraded valve springs

• Balanced rotating assembly

• New OEM gaskets & seals

• Correct clearances for high boost & E85

Installation

Custom tuning required for correct break-in & boost calibration
✅ Installation available at our Carrara, QLD workshop

Warranty: 10,000km / 12-month limited performance warranty covering assembly workmanship only.
Professional installation and tuning required.

The following are typically required to run this kit at intended output. Boosted Engineering can supply or advise on all of them.

• ECU tune (custom)Boosted Engineering supplies base map
• Upgraded fuel systemInjectors, fuel pump — spec varies with output
• Upgraded ignitionR35 coilpack conversion recommended
• Upgraded clutchTwin-plate for higher-power builds
• Oil cooler kitRecommended for sustained high-load use
• Upgraded axlesFor 350+ kW builds

The Street Kit is designed for daily-drivable turbo builds with reliable, responsive power delivery. The Race Kit is oriented toward circuit and drag use where higher output and modular servicing are priorities.

The kit is designed for bolt-on installation in a suitably-equipped workshop. Installation is available at our Carrara QLD workshop, or through our trusted partner network in most metropolitan areas.

Approximate installation time — 20 to 30 hours depending on configuration and supporting work.