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Wiseco Pro Tru Street Pistons PTS531A55 Pistons, Street, Forged, Flat Top, 4.375 in. Bore, Rings, Chrysler, Dodge, Plymouth, 7.2L, Set of 8

SKU: WISPTS531A55

Pistons

Wiseco Pro Tru Street Pistons PTS531A55 Pistons, Street, Forged, Flat Top, 4.375 in. Bore, Rings, Chrysler, Dodge, Plymouth, 7.2L, Set of 8

SKU: WISPTS531A55

Pistons
A$1,294.97
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

Our Pro Tru Street series pistons are forged from 4032 alloy aluminum in Mentor, Ohio and includes rings, pins, and clips for an all-inclusive rebuild. For any build budget, Wiseco has the piston to get you on the road or down the track.

Part Type

Engine Piston Set

Data: v4.2 - Upd: 2026-10-16 05:14:36

Features

  • 4032 Forged Aluminum
  • ArmorGlide Skirt Coating: Seizure resistant, Friction Reduction, and Quieter Operation
  • AS-Forged Dome with Crown Features & Oil Drain Backs
  • Chromium Alloy Steel Piston Pin & Spirolox Included

Specifications

Product Attributes - Brand
Wiseco
Product Attributes - Manufacturer's Part Number
PTS531A55
Product Attributes - Part Type
Pistons
Product Attributes - Product Line
Wiseco Pro Tru Street Pistons
Product Attributes - UPC
00193564093684
Product Attributes - Piston Rings Included
Yes
Product Attributes - Bore (in.)
4.375 in.
Product Attributes - Bore (mm)
111.125mm
Product Attributes - Stroke
3.750 in.
Product Attributes - Rod Length
6.760 in.
Product Attributes - Piston Style
Flat top, with two valve reliefs
Product Attributes - Piston Material
Forged aluminum
Product Attributes - Compression Height (in.)
2.050 in.
Product Attributes - Piston Head Volume (cc)
+4.00cc
Product Attributes - Wrist Pin Style
Press-fit or floating
Product Attributes - Wrist Pin Retainers Included
Yes
Product Attributes - Wrist Pin Included
Yes
Product Attributes - Pin Diameter (in.)
1.094 in.
Product Attributes - Piston Ring Thickness
1/16 in. x 1/16 in. x 3/16 in.
Product Attributes - File Fit
Yes
Product Attributes - Gapless
No
Product Attributes - Top Ring Thickness
1/16 in.
Product Attributes - Top Ring Material
Ductile iron
Product Attributes - Top Ring Facing Material
Plasma-moly
Product Attributes - Second Ring Thickness
1/16 in.
Product Attributes - Second Ring Material
Cast iron
Product Attributes - Second Ring Facing Material
Phosphate coated
Product Attributes - Oil Ring Thickness
3/16 in.
Product Attributes - Oil Ring Material
Carbon steel
Product Attributes - Oil Ring Facing Material
Chrome
Product Attributes - Oil Ring Tension
Standard
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold as a set of 8.

Reference Information

Brand Name/s Wiseco
StreetFX SKU wisPTS531A55
SFX Item ID 4767895
Supplier Item Code 4767895
Manufacturer SKU PTS531A55
Manufacturer UPC 193564093684
Alternative References 7.2L

Compatibility

Application Data
  • MakeCHRYSLER
    Beginning Year1966
    Ending Year1978
    Engine TypeV8
    Engine FamilyMopar big block RB
    Engine Size7.2L/440
  • MakeDODGE
    Beginning Year1966
    Ending Year1979
    Engine TypeV8
    Engine FamilyMopar big block RB
    Engine Size7.2L/440
  • MakePLYMOUTH
    Beginning Year1966
    Ending Year1978
    Engine TypeV8
    Engine FamilyMopar big block RB
    Engine Size7.2L/440

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