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Part number: K571M855
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Product Details
Wiseco Pistons K571M855 Pistons
Products specifications
Bore 85.5mm
Bore (in) 3.366 in.
Bore (mm) 85.500mm
Comp Height 28.7
Comp Ratio 8.8:1
Compression Distance (in) 1.130 in.
Dome Volume -21
File Fit No
Gapless No
Gram Weight 289
Oil Ring Material Stainless steel
Oil Ring Tension Standard
Oil Ring Thickness 2.8mm
Pin Diameter (in) 0.827 in.
Piston Head Volume (cc) +21.00cc
Piston Material Forged aluminum
Piston Style Dish, with four valve reliefs
Quantity Sold as a kit.
Rod 150
Second Ring Facing Material Phosphate coated
Second Ring Material Cast iron
Second Ring Thickness 1.2mm
Stroke 100
Top Ring Facing Material Gas nitrided
Top Ring Material Steel
Top Ring Thickness 1.0mm
Wrist Pin Style Press-fit or floating
Wiseco Pistons K571M855 Pro Tru Pistons
Sport Compact Series
4G63 w/ 100mm 4G64 Stroker
w/ .200" Wall Tool Steel Pins
Set of 4 Pistons
Recommended RingSet: 8550XX
Rings & Pins Included

World renowned for our work building race winning pistons, Wiseco utilizes experience from a diverse background of the most sophisticated sport compact engines.

Wiseco?s Sport Compact Pro Tru line creates the best value in forged pistons today. These American made pistons are forged and machined by skilled Ohio craftsmen with state-of-the-art forging presses and CNC machines. By using dedicated forgings specific to the final piston shape, Pro Tru pistons are stronger and lighter than industry standards.

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.

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Great price cheapest around super fast shipping will go to for all other performance parts needs!!!!!
Fantastic company! Great selection for every vehicle and fast shipping! I will definitely shop here again.
Easy order method from website.... now we wait to see how delivery goes...
Fast professional service and delivery. Thank You
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