Engines and Components› Pistons and Piston Rings

Wiseco

Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc 99.5 Piston Shelf Stock Kit

$873.99

SKU: W00C K598M995AP

In Stock
In Stock
Ships by Aug 2
Free Shipping over $100
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: K598M995AP

Professional Series forged racing pistons from Wiseco are no-expense-spared pistons designed for the serious racers and builders. Packed full of custom-level performance and durability features and provided with premium rings, Professional Series pistons are designed and built for use in heavy to severe duty race builds. Remove your limits with Wiseco s Professional Series.

Features:

  • Engineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength
  • ArmorGlide Skirt Coating: seizure resistant, friction reduction, and quieter operation
  • Fully machined crown features
  • Precision ring grooves, anti-detonation groove, and additional ring seal improving features
  • Forced pin oiling
  • Designed and built to withstand heavy to severe duty performance applications

Wiseco Subaru EJ257 Piston Set, 99.50 mm Bore, 30.70 mm Compression Height, 0.9055 in. Pin Diameter, Sport Compact, Set of 4.

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

MIA's Description

Upgrade your Subaru WRX, STI, or Legacy with the Wiseco Piston Set featuring a 99.5mm bore designed for high-performance builds. These Professional Series forged pistons deliver exceptional strength and durability, ideal for serious racers and builders. Manufactured in the USA from 2618 aluminum, they offer improved tensile strength and feature Wiseco’s ArmorGlide® Skirt Coating for reduced friction and seizure resistance. The fully machined crown includes precision ring grooves, an anti-detonation groove, and enhanced ring seal features. With a compression height of 30.7mm and a pin diameter of 0.9055 inches, this set includes wrist pins, pistons, and premium rings, engineered for optimal forced pin oiling and durability. Specifically designed for Subaru EJ257 2.5L 16V WRX STI 2004+ and 2006 WRX EJ255 engines. This set of 4 pistons is a special order non-stock item. Trust your engine with Wiseco forged dish pistons.

Fitment

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Specifications

BrandWiseco
Part NumberW00C K598M995AP

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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