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Wiseco Pro Tru Compact Series Piston Kit (95-98 Subaru WRX) K579M925

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Pro Tru sets include plasma moly 1/16, 1/16, 3/16 pre-gapped ring packages which provide excellent seal, friction reduction, and long life. Pro Tru pistons also come in a variety of volumes that allow the engine builder to choose the exact compression ratio required for their engine.

Bore (in):3.642 in.

Bore (mm):92.500mm

Piston Style:Dish, with no valve reliefs

Piston Material:Forged aluminum

Compression Distance (in):1.181 in.

Piston Head Volume (cc):+17.80cc

Wrist Pin Style:Press-fit or floating

Pin Diameter (in):0.906 in.


File Fit:No

Top Ring Thickness:1.2mm

Top Ring Material:Steel

Top Ring Facing Material:Gas nitrided

Second Ring Thickness:1.2mm

Second Ring Material:Cast iron

Second Ring Facing Material:Phosphate coated

Oil Ring Thickness:2.8mm

Oil Ring Material:Stainless steel

Oil Ring Tension:Standard

Quantity:Sold as a kit.

Notes:Tab style oil ring.

Part # K579M925

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