Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc Piston Shelf Stock Kit | Subaru WRX / STI (99.75) (K598M9975)

Name: Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc Piston Shelf Stock Kit | Subaru WRX / STI (99.75) (K598M9975)
Brand: Wiseco
Price: 661.93 USD
Availability: InStock

Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc Piston Shelf Stock Kit | Subaru WRX / STI (99.75) (K598M9975)

SKU:K598M9975

In stock

$732.99 USD

~~$732.99 USD~~ $732.99 USD

ADDITIONAL DISCOUNTS APPLIED AT CHECKOUT Sold out

Product variants

Quantity

▶ Vehicle Fitments

Year	Make	Model
1994 - 2002	Audi	A8 Quattro
2000 - 2011	Subaru	Impreza
1989 - 1993	Subaru	Legacy
2003 - 2009	Subaru	Outback

The Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc Piston Shelf Stock Kit is a high-performance forged racing piston designed for serious motorsport applications. Crafted from premium materials, these pistons feature a dish design with a -19cc volume, optimized for increased compression and power output. Built to withstand the rigors of heavy-duty racing, they incorporate custom-level durability features and come with high-quality rings for reliable sealing and performance. The Professional Series pistons are engineered to remove limits in demanding race builds, offering enhanced strength, thermal stability, and consistent performance under severe conditions.

These pistons are compatible with Subaru EJ257 engines found in WRX and STI models, suitable for 1999 and newer vehicles. They are intended for use in high-performance, track, or severe-duty racing setups where maximum durability and power are required. Installation involves a standard piston replacement process, making them ideal for engine rebuilds or upgrades aimed at boosting horsepower and efficiency. The kit includes the pistons and rings, providing everything needed for a professional-level upgrade in racing or high-performance street applications.

Overview

Wiseco Professional Series

Fitment Summary

This product is designed for Subaru EJ257 engines found in WRX and STI models, particularly suited for high-performance and racing applications.

Part #: K598M9975

Overview

The Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc Piston Shelf Stock Kit is a set of high-quality forged pistons engineered for serious racing and performance builds. Crafted from premium materials, these pistons are designed to withstand the demanding conditions of competitive motorsport, providing exceptional durability and consistent performance. They are ideal for enthusiasts and professional builders seeking to maximize engine response, reliability, and power output in turbocharged Subaru EJ257 engines.

Whether you're upgrading your stock engine or building a custom race setup, these pistons help support high compression ratios and optimized combustion, contributing to improved throttle response and overall engine efficiency.

Key Features

Forged aluminum construction for enhanced strength and durability
Dish design with -19cc volume to support high compression ratios
Precision-machined for exact fitment and optimal piston-to-wall clearance
Designed specifically for Subaru EJ257 engines in WRX and STI models
Includes piston shelf for stock or performance applications
Premium rings included for reliable sealing and longevity
Engineered to withstand severe duty and high-stress racing conditions

Construction & Design

The pistons are forged from high-grade aluminum alloy, offering superior strength-to-weight ratio and heat resistance. The dish design helps achieve the desired compression ratio while maintaining structural integrity under high boost and power levels. Precision machining ensures consistent dimensions and smooth operation within the engine's combustion chamber.

Installation & Fitment

Designed as a direct replacement for OEM pistons in Subaru EJ257 engines, these pistons are compatible with stock or upgraded components. Proper installation requires standard engine rebuilding procedures and attention to clearance specifications. Professional installation is recommended to ensure optimal performance and longevity.