This listing is for one set of brand new CP Pistons for the Subaru EJ20 engines from the Impreza WRX 

Included = 4x Pistons + 4x Wrist Pins + 4 Rings + Locks 

Bore Size = 92mm 

Compression = 8.5 

Part Number = SC7399 (ID = 4173) 

This listing is for one set of brand new CP Pistons for the Subaru EJ20 engines from the Impreza WRX  Included = 4x Pistons + 4x Wrist Pins + 4 Rings + Locks  Bore Size = 92mm  Compression = 8.5  Part Number = SC7399 (ID = 4173)