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Diamond Racing Forged Pistons Set Subaru WRX STi EJ257 83mm Stroker 100.5mm -16.0cc 9.2:1

$149.00 $941.99
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SpecsBore Diameter100.5mm (+0.040in Over)Compression Ratio9.2:1Rod Length5.137in / 130.5mmStroke83mm StrokerPin.905in x 2.500in x .180inPiston Features:3D milling on piston crowns for ready to install finishOffset pins for quiet operationMoly skirt coating

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Description

Specs
Bore Diameter100.5mm (+0.040in Over)
Compression Ratio9.2:1
Rod Length5.137in / 130.5mm
Stroke83mm Stroker
Pin.905in x 2.500in x .180in

Piston Features:
3D milling on piston crowns for ready to install finish
Offset pins for quiet operation
Moly skirt coating for friction loss and skirt wear protection
Ratios figured for 101mm x .0236 head gasket
Top ring down dimension: .250″(1.208cd) – .240″ (1.129cd)
Premium 8620 .180W wrist pins chamfered for roundwire locks included
Premium 1.2mm x 1.2mm x 2.0mm ring package included
Oversized valve pockets – for larger than stock valve sizes
Valve pocket depth: 0.220″ intake and .220″ exhaust
2618 material for High HP/Boost applications

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