![Wiseco Pistons Fits Mazda Miata 1.6L 78.5Mm 8.6:1 K554M785](http://roco4x4.com/cdn/shop/files/e8667ec00c714fdba3a056b850ad7b3d_05128c10-cbe0-49c4-8b90-b0a5190b1b8e_700x700.jpg?v=1715332377)
![Wiseco Pistons Fits Mazda Miata 1.6L 78.5Mm 8.6:1 K554M785](http://roco4x4.com/cdn/shop/files/e8667ec00c714fdba3a056b850ad7b3d_05128c10-cbe0-49c4-8b90-b0a5190b1b8e_700x700.jpg?v=1715332377)
Description
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):3.090 in.Bore (mm):78.500mmPiston Style:Dish, with four valve reliefsPiston Material:Forged aluminumCompression Distance (in):1.258 in.Piston Head Volume (cc):+13.00ccWrist Pin Style:Press-fit or floatingPin Diameter (in):0.787 in.Gapless:NoFile Fit:NoTop Ring Thickness:1.0mmTop Ring Material:SteelTop Ring Facing Material:Gas nitridedSecond Ring Thickness:1.2mmSecond Ring Material:Cast ironSecond Ring Facing Material:Phosphate coatedOil Ring Thickness:2.8mmOil Ring Material:Stainless steelOil Ring Tension:StandardQuantity:Sold as a kit.Part #K554M785