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Wiseco Chevy Small Block Pro Tru Street 4.165in Bore Piston Kit

SKU: WISPTS525A4

Pistons

WIS Piston Sets - 8 Cyl...

Wiseco Chevy Small Block Pro Tru Street 4.165in Bore Piston Kit

SKU: WISPTS525A4

Pistons

WIS Piston Sets - 8 Cyl...

A$1,871.68
IN STOCK! Est Ship 4-7 days. In stock at 1 location (4 available)

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Description

Wiseco Chevy Small Block Pro Tru Street 4.165in Bore Piston Kit

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.

Additional Information

Wiseco Chevrolet Small Block Piston Set, 4.165 in. Bore, 1.125 in. Compression Height, 0.927 in. Pin Diameter, Pro Tru Street, Set of 8.

Part Type

Engine Piston Set

Product Overview

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.


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 09:44:20

Data: v4.2 - Upd: 2026-11-09 07:37:48

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

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

(keyword: piston)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Bore Diameter:4.165
Category Hierarchy:Auto>Pistons>Piston Kits>Domestic>Pro Tru Street
Compression Height:1.125
Description:Wiseco Chevy Small Block Pro Tru Street 4.165in Bore Piston Kit
Engine - Web:Small Block Gen I
Engine Type:ICE
Engine:Small Block
Forging Type:Slab Side
Industry:Automotive
Make - Web:Chevrolet
Make:Chevrolet
Oil Ring Thickness:3/16
Part Number:wisPTS525A4
Piston Material:4032
Piston Quantity:8
Piston Volume:-5.00
Product Market:Domestic
Product Series:Pro Tru Street
Product Type:Engine Piston Set
Ring Set Included:Yes
Second Compression Ring Thickness:1/16
Skirt Coating:Yes
Title - Web:Pro Tru Street Chevy Small Block Piston Set - 4.165 in. Bore - 1.125 .in CH, -5.00 CC
Title:Pro Tru Street - Chevrolet, Small Block, 4.165 in. Bore, Piston Set
Top Compression Ring Thickness:1/16
Wrist Pin Included:Yes
Wrist Pin Material:5115
Wrist Pin Outer Diameter:0.927
Wrist Pin Style:Floating

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Wiseco, WISECO-PRO TRU
StreetFX SKU wisPTS525A4
SFX Item ID 4064144
Accounting SKU wis-PTS525A4
Manufacturer SKU PTS525A4
Manufacturer UPC 193564093530
Alternative References PTS525A4, WIS-PTS525A4

Piston and Ring Kit, Pro Tru Street, Forged Aluminum, Flat Top, 4.165 in. Bore, Chevy, Small Block, Kit

Are you looking for affordable high performance for your street machine? Wiseco Pro Tru Street pistons are right up your alley! These forged 4032 aluminum pistons are complete with chromium alloy steel piston pins and Spirolox. Oversized, symmetrical, radiused valve pockets allow for maximum flow around the valves during overlap—and accommodate oversized valves and high-lift cams. Wiseco's proprietary ArmorGlide skirt coating extends piston life, increases horsepower, reduces noise, and offers much tighter dimensional tolerances than typical spray-on coatings. Choose the set designed for your vehicle and engine application. World-class, precision-machined high performance pistons—that's Wiseco value!

Product Attributes
BrandWiseco
Manufacturer's Part NumberPTS525A4
Part TypePistons
Product LineWiseco Pro Tru Street Pistons
UPC00193564093530
Piston Rings IncludedYes
Bore (in.)4.165 in.
Bore (mm)105.791mm
Stroke3.750 in.
Rod Length6.000 in.
Piston StyleFlat top, with two valve reliefs
Piston MaterialForged aluminum
Compression Height (in.)1.125 in.
Piston Head Volume (cc)+5.00cc
Wrist Pin StylePress-fit or floating
Wrist Pin Retainers IncludedYes
Wrist Pin IncludedYes
Pin Diameter (in.)0.927 in.
Piston Ring Thickness1/16 in. x 1/16 in. x 3/16 in.
File FitYes
GaplessNo
Top Ring Thickness1/16 in.
Top Ring MaterialDuctile iron
Top Ring Facing MaterialPlasma-moly
Second Ring Thickness1/16 in.
Second Ring MaterialIron
Second Ring Facing MaterialPhosphate coated
Oil Ring Thickness3/16 in.
Oil Ring MaterialCarbon steel
Oil Ring Facing MaterialChrome
Oil Ring TensionStandard
RemanufacturedNo
QuantitySold as a set of 8.

Manufacturer Attributes
Piston Volume -5.00
Compression Height 1.125
Bore Diameter 4.165
Piston Material 4032
Piston Quantity 8
Category Hierarchy Auto>Pistons>Piston Kits>Domestic>Pro Tru Street
Industry Automotive
Make Chevrolet
Make - Web Chevrolet
Product Market Domestic
Product Type Engine Piston Set
Engine Type ICE
Product Series Pro Tru Street
Title Pro Tru Street - Chevrolet, Small Block, 4.165 in. Bore, Piston Set
Title - Web Pro Tru Street Chevy Small Block Piston Set - 4.165 in. Bore - 1.125 .in CH, -5.00 CC
Forging Type Slab Side
Engine Small Block
Engine - Web Small Block Gen I
Skirt Coating Yes
Oil Ring Thickness 3/16
Ring Set Included Yes
Second Compression Ring Thickness 1/16
Top Compression Ring Thickness 1/16
Wrist Pin Included Yes
Wrist Pin Material 5115
Wrist Pin Outer Diameter 0.927
Wrist Pin Style Floating
Out of Stock Message Estimated Shipped Date 3-4 Weeks
Manufacturer Designation Piston Set, Chevrolet, Small Block, 4.165 in. Bore, Pro Tru Street, Set of 8
Product Class Engine Piston Set
Construction/Type Wiseco Chevrolet Small Block Piston Set, 4.165 in. Bore, 1.125 in. Compression Height, 0.927 in. Pin Diameter, Pro Tru Street, Set of 8.
Vehicle Designations Chevrolet Small Block
Product Outline <ul><li>ArmorGlide? Skirt Coating: Seizure resistant, Friction Reduction, and Quieter Operation</li><li>4032 Forged Aluminum</li><li>AS-Forged Dome with Crown Features & Oil Drain Backs</li><li>Chromium Alloy Steel Piston Pin & Spirolox? Included</li></ul>
Vehicle Brief Chevy Small BlockPROTRU 1.125 5025A4
Market 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.

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