Wiseco Subaru EJ257 WRX/STI 4V Dish Piston Set – 99.50mm Bore, Forged Performance

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

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

The Wiseco K598M995AP Professional Series forged racing pistons are engineered for high-performance Subaru EJ257 engines, delivering exceptional strength and durability for serious racing applications. Crafted from 2618 aluminum in the USA, these pistons feature precision machined crowns and custom design elements that optimize power and reliability. The fully machined crown and forced pin oiling ensure consistent performance under heavy-duty conditions, making them ideal for severe performance builds. The pistons include premium rings and incorporate features like anti-detonation grooves and enhanced ring seal technology to maximize combustion efficiency and reduce harmful knocking.
Wiseco's ArmorGlide skirt coating reduces friction, minimizes seizure risk, and promotes quieter operation, extending piston life in aggressive driving scenarios. These pistons are built to withstand the rigors of high-stress environments, ensuring longevity and sustained performance. Designed specifically for Subaru EJ257 engines with a 99.50mm bore and 30.70mm compression height, this set of four pistons provides a complete upgrade for your sport compact build. The pistons are fully compatible with racing setups, offering the reliability and high-performance features necessary for competitive motorsports.
Please note that these pistons are not carb-approved and require acknowledgment of this specification during installation. Designed for professional racing and heavy-duty applications, they are an excellent choice for enthusiasts seeking maximum performance and durability from their Subaru EJ257 engine. Trust Wiseco's expertise and precision engineering to remove limits and elevate your racing experience.

Features:

• Engineered, forged, and machined in the USA from 2618 aluminum for improved tensile strength

• Precision ring grooves, anti-detonation groove, and additional ring seal improving features

• ArmorGlide skirt coating: seizure resistant, friction reduction, and quieter operation

• Designed and built to withstand heavy to severe duty performance applications

• Fully machined crown features

• Forced pin oiling for consistent lubrication and durability

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1