Manley Performance Subaru WRX/STi EJ257 100mm 75mm DE-Stroker Piston Set with Dish, Part Number 632005C-4

Description

Upgrade your Subaru WRX/STi EJ257 engine with the Manley Performance 632005C-4 piston set, designed for optimal strength and durability in high-performance applications. Crafted from domestic 2618 alloy forgings, these pistons deliver superior tensile strength and resilience, making them ideal for demanding engine builds. The precision-engineered cam and barrel skirt profiles generate substantial power while maintaining gentle contact with cylinder walls, contributing to both performance and longevity. Featuring chrome moly wrist pins as standard, with optional upgrades to 9310 and Turbo Tuff/DLC alloys, these pistons are built to withstand high-stress conditions and extended use.
The pistons include carefully machined ring lands and grooves, adhering to strict standards to ensure excellent ring seal and maximize power output. Unique fixturing techniques used in manufacturing allow for accurate skirt turning and ring groove machining in a single operation, ensuring the ring groove to skirt squareness and consistent performance. This design enhances ring sealing, reduces blow-by, and improves overall engine efficiency. The set includes a 75mm bore size with a +.50mm oversize, a 100mm length, and a dish top configuration with an 8.5:1 compression ratio, tailored for turbocharged setups. This product is essential for engine builders seeking reliable, high-performance pistons for street or race applications.
Please note, this piston set is not CARB approved and requires acknowledgment of this status prior to purchase. It is also not suitable for air freight shipping, but is available via ground freight options. Engineered to meet the needs of professional tuners and serious enthusiasts, the Manley Performance Subaru piston set ensures your engine can handle increased power and stress, providing consistent performance and long service life.

Features:

• 2618 alloy forgings for superior strength and performance

• Chrome moly wrist pins standard, with optional upgrades to 9310 and Turbo Tuff/DLC alloys

• Exacting ring lands and grooves for enhanced ring seal and power output

• Cam and barrel (skirt) profiles designed for high power and minimal cylinder wall wear

• Unique fixturing allows for skirt turning and ring groove machining in a single operation