Manley Performance

Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92.5mm +0.5mm Bore 8.5:1 Dish Piston Set with Rings - 620005C-4

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SKU:
MAN620005C-4
UPC:
807298067896
MPN:
620005C-4
Availability:
Regularly stocked product
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MSRP: $760.03
$699.23
— You save $60.80
Current Stock: 2

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Description

What is the core advantage of forged pistons over cast pistons?
Forged pistons, like these 2618 alloy sets for the 2002-2005 Saab 9-2X and Subaru Impreza, offer superior strength and durability under extreme stress.

Is professional installation necessary for these forged pistons?
Professional installation is recommended for these Manley Performance forged pistons to ensure proper fitment and optimal engine function.

Manley Performance 4-Cylinder Forged Piston Sets deliver unmatched strength for demanding applications like drag racing, scoring a 9 on our usage matrix. Constructed from 2618 alloy forgings with tool steel wrist pins, these pistons are engineered for extreme durability and reliability. Experience enhanced engine performance and confidence under severe racing conditions with these precision-crafted components.

What Owners Say

Owners and enthusiasts consistently praise Manley pistons as well-engineered 2618 forgings that rank alongside top-tier brands like CP and Wiseco, with many builders preferring them for custom builds. Users note these pistons won't score cylinder walls, which is a significant advantage during extreme use. Recent updates have addressed earlier complaints about excessive weight, with newer versions showing meaningful mass reductions. The honest criticism centers on the included piston rings—multiple builders report they soften quickly and don't seal properly, leading to premature oil consumption, prompting many to swap them immediately. Despite this ring issue, Manley pistons maintain a strong reputation in the performance community for their core quality and design.

Key Features

  • 2618 alloy forgings
  • proven cam and barrel skirt profiles
  • tool steel wrist pins
  • moly skirt coatings on select part numbers
  • Chrome Moly Wrist Pins
  • Unique Fixturing

Why Choose the MAN Piston Sets - 4 Cyl

Delivers extreme durability for sustained high-performance driving.

Achieves smoother engine operation and reduced friction for enhanced power.

Provides superior strength and reliability under demanding racing conditions.

Transforms your engine's resilience for aggressive acceleration and track use.

Who Is This For?

Street Performance — 8/10
Forged 2618 alloy for strength and reliability.

Track / Autocross — 8/10
High strength forged alloy for demanding conditions.

Drag Racing — 9/10
Engineered for unmatched strength and reliability.

Racing Competition — 9/10
Proven profiles and tool steel wrist pins.

Engine Performance — 8/10
2618 alloy forgings offer enhanced strength.

Additional Resources

Official Manley Performance Product Page

Important Notices

⚠️ CARB Notice: This product is NOT legal for street use in California under CARB (California Air Resources Board) regulations. For off-road or race use only.

⚠️ Proposition 65 Warning: This product can expose you to chemicals including lead and/or other substances known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

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Additional Information

CARB:
This product is not CARB Legal and not for sale in California
Clearance Item:
N
MPN:
620005C-4
Proposition 65:
Y
Case Lot Quantity:
1
Category:
Engine Components>Piston Sets - Forged - 4cyl
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