CP Pistons

SC7421

CP Pistons SC7421 Piston and Ring Set for Subaru

Forged

Bore (100mm);Size (0.5mm);Compression Ratio (8.2)

CP Piston & Ring Set for Subaru EJ257 WRX STI - Bore (3.937 (100.0mm)) - Size (+0.5mm) - Comp Ratio (8.2)

Bore: 3.937 (100.0mm)
Size: +0.5mm
Stroke: 79
Rod Length: 130.5
CH: 1.208
Pin Size: 23
Compression Ratio: 8.2
Ring Part Number (Included): RS1658-3937-0
Pin Part Number (Included): 905-2500-18CP1S
Locks Part Number (Included): None
Number Of Pistons: 4
CC: -21

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