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Part number: PT040H4
Product Details
Wiseco Pistons PT040H4 Pistons
Products specifications
Bore 3.840"
Bore (in) 3.840 in.
Bore (mm) 97.536mm
Comp Height 1.825
Comp Ratio (Stage 1) 8.1:1
Comp Ratio (Stage 2) 8.6:1
Compression Distance (in) 1.825 in.
Dome Volume -25cc
File Fit No
Gapless No
Gram Weight 236
Oil Ring Material Stainless steel
Oil Ring Tension Standard
Oil Ring Thickness 3/16 in.
Pin Diameter (in) 0.940 in.
Piston Head Volume (cc) +25.00cc
Piston Material Forged aluminum
Piston Style Dish, with no valve reliefs
Quantity Sold as a kit.
Rod 5.960"
Second Ring Facing Material Cast iron
Second Ring Material Iron
Second Ring Thickness 1/16 in.
Stroke 3.400"
Top Ring Facing Material Plasma-moly
Top Ring Material Iron
Top Ring Thickness 1/16 in.
Wrist Pin Style Press-fit or floating
Wiseco Pistons PT040H4 Pro Tru Forged Pistons
Set of 6 Pistons
Rings Included
Replacement Ring: 3840H
Replacement Piston: 5040H4

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

Wiseco?s 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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Excellent service, incredibly fast shipping and delivery. Would DEFINITELY do business with again.
Easy to deal with, lowest price and included quick shipping.
quick and easy
K had the lowest price available for what I was looking for. Within 24 hrs I had an order confirmation and tracking information.  I have no complaints, and will likely do business with them again.
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