Wiseco Piston Set (99.5mm Bore 8.9:1 Compression) - 2006-2014 Subaru WRX / 2004-2021 Subaru STI

Wiseco's pistons outgun cast and Hypereutectic pistons, giving you stronger pistons and tighter tolerances than any other part in your engine, with less internal and external machining. Wiseco's advanced forging process and extensive heat-treat and finishing process assure you of the performance and reliability you demand from your high performance engine.

Wiseco's pistons outgun cast and Hypereutectic pistons, giving you stronger pistons and tighter tolerances than any other part in your engine, with less internal and external machining. Wiseco's advanced forging process and extensive heat-treat and finishing process assure you of the performance and reliability you demand from your high performance engine.

All Wiseco forged pistons include the required ring set. Wiseco Piston Rings are available to order separately for engine rebuilding. Forged 2618 alloy. Works well in boosted high power and nitrous applications.

Specifications

Compression Ratio: 8.9:1
Bore: 99.5mm
Size: Stock size
Quantity: 4
Includes: Wrist pins, pistons, and rings

About Wiseco

World renowned for their work building race winning pistons, Wiseco utilizes experience from a diverse background of the most sophisticated engines in such venues as Formula 1, Indy Racing League (IRL), NHRA Pro Stock, Moto GP, AMA Superbike, AMA Motocross and Supercross to design and manufacture the highest technology pistons available. Extensive engineering goes into each Wiseco Automotive part to provide the maximum torque and horsepower ever driver wants. We offer Custom Pistons and Rotating Assemblies for a broad range of applications from the most popular Domestic models to Sport Compact, and Drag only use applications.