Manley Performance Platinum Series Subaru WRX/STI 99.75mm Bore Piston Set – Extreme Duty with 8.5:1 Compression Ratio

Description

The Manley Performance Platinum Series piston set for Subaru WRX and STI models offers high-performance engineering tailored for demanding engines. Crafted from high-grade 2618 alloy forgings, these pistons deliver exceptional strength and durability, making them ideal for professional engine builders and tuners seeking reliable power. The design incorporates proven cam and barrel (skirt) profiles that maximize power output while ensuring gentle contact with the cylinder walls to reduce wear. Chrome moly wrist pins come standard, with options for upgraded materials such as 9310 and Turbo Tuff/DLC alloys for enhanced durability in high-stress applications.

Precision is at the core of Manley’s manufacturing process. The pistons feature strict standards for ring lands and grooves, which enhance ring seal and promote more consistent compression and power delivery. Unique fixturing allows for skirt turning and ring groove machining in a single operation, ensuring perfect squareness between the ring grooves and the skirt for optimal performance. These pistons are designed for a bore size of 99.75mm with a +.25mm oversize, providing a reliable fit for engine rebuilds aimed at increased horsepower and longevity.

Built with quality materials and advanced manufacturing techniques, the Manley Platinum Series pistons are an excellent choice for enthusiasts and professionals seeking a dependable upgrade. Please note that these pistons are not carb approved, and a carb acknowledgment is required before installation. They are suitable for air freight shipment and are a part of Manley’s commitment to delivering high-performance automotive components that meet rigorous standards for strength, precision, and durability.

Features:

• 2618 alloy forgings for superior strength and performance

• Chrome moly wrist pins included as standard, with upgrade options available

• Exacting ring lands and grooves for enhanced seal and power

• Cam and barrel skirt profiles designed for high power output

• Unique fixturing for precise skirt turning and ring groove machining