ZRP 1400HD forged pistons are designed for the Subaru EJ20 engine in the WRX-STi model. This version has an 8.5:1 compression ratio and a piston diameter of 92.50 mm.
When choosing, check the actual cylinder measurement, clearances and compatibility with other engine components. The supplier’s title lists the product as 1400HD Forged Pistons by Wiseco.
- Engine: 2.0L Subaru EJ20
- Version: 1400HD
- Compression ratio: 8.5:1
- Piston diameter: 92.50 mm
Suitable for: Subaru Impreza I (GC/GF) / II (GD/GG) / III (GH/GR).


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