• Manley 98+ Subaru WRX EJ205 75mm STD Stroke 92.5mm +.5mm Bore 8.5:1 Dish Piston Set with Rings | Subaru WRX (98+) (615005C-4)
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Manley 98+ Subaru WRX EJ205 75mm STD Stroke 92.5mm +.5mm Bore 8.5:1 Dish Piston Set with Rings | Subaru WRX (98+) (615005C-4)

Manley 98+ Subaru WRX EJ205 75mm STD Stroke 92.5mm +.5mm Bore 8.5:1 Dish Piston Set with Rings | Subaru WRX (98+) (615005C-4)

615005C-4

In stock

$699.23 USD
$760.03 USD $699.23 USD
ADDITIONAL DISCOUNTS APPLIED AT CHECKOUT Sold out

The Manley Platinum Series pistons are high-performance forged components designed for Subaru WRX models with the EJ205 engine. Crafted from 2618 alloy, these pistons feature proven cam and barrel skirt profiles to ensure optimal combustion efficiency and durability under demanding conditions. Equipped with tool steel wrist pins and moly skirt coatings on select part numbers, they provide enhanced wear resistance and thermal stability. These pistons are engineered to deliver superior performance, making them suitable for high-horsepower applications, tuning, and racing setups. Their robust construction and precision design help maximize engine output while maintaining reliability during extended use.

Specifically designed for 1998 and newer Subaru WRX models with the EJ205 engine, these pistons have a 75mm bore, a 8.5:1 compression ratio, and a +0.5mm oversize bore. They serve as direct replacements or performance upgrades for stock pistons, ideal for street, track, or drag racing applications. The set includes pistons and rings, ensuring a complete upgrade for engine rebuilds or performance enhancements. Proper installation requires standard machining and tuning, and these pistons are compatible with stock or upgraded engine components for a reliable, high-performance build.

Overview

Manley Performance Pistons

Fits Subaru WRX 98+ with EJ205 engine

Part #: 615005C-4

Overview

The Manley Platinum Series piston set is designed for high-performance Subaru WRX engines, specifically for models with the EJ205 engine from 1998 onward. Crafted from premium 2618 alloy forgings, these pistons deliver exceptional strength and durability under demanding conditions. Ideal for enthusiasts, tuners, and professional engine builders, this set supports increased power output and reliable operation during aggressive driving or tuning applications. Whether you're building a high-performance street car or a dedicated race engine, these pistons help optimize combustion efficiency and engine response. Constructed with proven cam and barrel skirt profiles, the pistons ensure proper fitment and consistent performance. The moly skirt coatings on select part numbers reduce friction and wear, extending the lifespan of your engine components. Equipped with tool steel wrist pins, these pistons are engineered to withstand high loads and thermal stresses, making them suitable for boosted or naturally aspirated setups.

Key Features

Designed for durability and performance, the Manley Platinum Series pistons feature:
  • Made from high-strength 2618 alloy forgings for superior toughness
  • Precision-machined to match OEM specifications for perfect fitment
  • Tool steel wrist pins for enhanced load capacity and longevity
  • Moly skirt coatings on select models to reduce friction and wear
  • 75mm bore with +0.5mm oversize for custom rebuilds
  • Standard stroke of 75mm and a compression ratio of 8.5:1 for versatile tuning
  • Optimized piston profile for improved combustion and power delivery

Construction & Design

These pistons are meticulously engineered with high-quality forgings and precision machining to ensure consistent dimensions and reliable performance. The moly skirt coatings provide a low-friction surface that helps reduce engine wear and improve efficiency, especially under high-stress conditions. The design incorporates proven barrel skirt profiles that support stability and minimize piston slap, contributing to quieter operation and longer engine life.

Driving Feel & Feedback

While primarily a performance upgrade, these pistons help support more aggressive tuning and higher power levels, translating into improved throttle response and engine responsiveness. They are built to withstand the rigors of high-performance driving, providing confidence and durability during spirited runs or daily use.

Installation & Fitment

Designed as a direct replacement for OEM pistons in Subaru WRX models with EJ205 engines from 1998 and later, installation should be performed by qualified technicians familiar with engine rebuilds. Proper clearances and assembly procedures are essential to maximize performance and longevity.

What’s Included

This piston set includes all four pistons, complete with moly skirt coatings and tool steel wrist pins, ready for installation in your engine rebuild or upgrade project.

Ideal For

Perfect for Subaru enthusiasts, professional tuners, and engine builders seeking durable, high-performance pistons for boosted or naturally aspirated EJ205 engines.
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