• Manley STD Stroke 99.5mm Bore Dish Piston Set with Rings | Subaru WRX STi (04+) (612000C-4)
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Manley STD Stroke 99.5mm Bore Dish Piston Set with Rings | Subaru WRX STi (04+) (612000C-4)

Manley STD Stroke 99.5mm Bore Dish Piston Set with Rings | Subaru WRX STi (04+) (612000C-4)

612000C-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 STi models equipped with the EJ257 engine. Crafted from 2618 alloy forging, these pistons provide exceptional strength and durability under demanding conditions. They feature proven cam and barrel skirt profiles, moly skirt coatings on select part numbers, and tool steel wrist pins, ensuring reliable operation during high-performance tuning and racing applications. These pistons are engineered to deliver consistent power, improved thermal stability, and longevity, making them ideal for enthusiasts seeking a robust upgrade for their engine.

Designed specifically for 2004 and newer Subaru WRX STi models with a 99.5mm bore and 8.5:1 compression ratio, these pistons serve as a direct replacement for stock components. They are suitable for street, track, and performance tuning scenarios, offering a reliable upgrade for increased horsepower and efficiency. The set includes pistons and rings, and installation requires standard engine assembly procedures. Compatible with EJ257 engines, these pistons are an excellent choice for professional engine builders and serious tuners aiming for superior performance and durability.

Overview

Manley Performance Pistons

Fits Subaru WRX STi EJ257 2004 and newer models

Part #: 612000C-4

Overview

The Manley Platinum Series piston set is designed for high-performance Subaru WRX STi engines, specifically the EJ257 platform. Crafted with advanced materials and precision engineering, these pistons are ideal for enthusiasts, tuners, and professional engine builders seeking reliable durability and consistent performance. Whether you're building a stock replacement or a heavily modified powerplant, these pistons help support your engine’s response, heat management, and longevity, ensuring your vehicle maintains peak performance under demanding conditions.

Key Features

Designed with 2618 alloy forgings for superior strength and thermal stability, these pistons feature proven cam and barrel skirt profiles for optimal fit and reduced friction. The moly skirt coatings on select part numbers enhance wear resistance, extending engine life. Equipped with tool steel wrist pins, these pistons deliver reliable connection and durability. The dish design with an 8.5:1 compression ratio provides a balance of power and efficiency, making them suitable for a variety of tuning applications. The standard 99.5mm bore and stroke ensure precise fitment for EJ257 engines, supporting high-performance builds with confidence.

Construction & Design

These pistons are manufactured from high-grade 2618 alloy forgings, known for their excellent strength-to-weight ratio and thermal properties. The moly skirt coatings reduce friction and wear, while the tool steel wrist pins provide added durability for high-stress operation. The design incorporates proven profiles that optimize piston stability and response during high RPM and boost conditions.

Performance & Response

Engineered to support aggressive tuning and increased power output, these pistons help improve throttle response and engine efficiency. Their robust construction ensures consistent performance and durability, even under high stress, making them suitable for both daily driving and competitive applications.

Installation & Fitment

Designed for direct replacement in Subaru WRX STi EJ257 engines, these pistons require standard assembly procedures. Proper installation with compatible rings and hardware is recommended to ensure optimal performance and longevity.

What’s Included

The package includes a complete set of pistons with moly skirt coatings and tool steel wrist pins, ready for installation in your EJ257 engine.
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