Wiseco K598M995 - Pistons and Rings for Subaru WRX STi 2.5L EJ257, -19cc Dish, 99.5mm Bore

Part Number	K598M995
Bore	99.5mm / 3.917"
Stroke	79mm / 3.110"
Rod Length	130.5mm / 5.137"
Compression Height	30.7mm / 1.209"
Dish Volume	-19.0cc Dish
Wrist Pin Diameter	23mm / .9055"
Compression Ratio	8.9:1
Ring Stack	1.0mm x 1.2mm x 2.8mm

This Piston Kit fits all 2004+ WRX STi 2.5L EJ257 Engines. These Pistons feature Wiseco's ArmorGlide® Skirt Coating for reduced friction. Included in this kit are .200" Wall Wrist Pins and a Matching Piston Ring Set. The Piston Rings feature a Gas Nitrided Top Ring that works very well with Turbocharged Engines and a Napier 2nd Ring for Excellent Oil Control. We recommend these Pistons and Rings for all WRX STi EJ257 Engines. When it comes down to Quality and Price, Wiseco offers an excellent product!