Manley Performance EJ257 STD Stroke 100mm +.5mm Bore Dish Piston Set with Rings for Subaru Impreza (Part #612005C-4)

Description

The Manley Performance EJ257 piston set is designed to deliver exceptional durability and high performance for Subaru Impreza models from 2004 to 2012. Crafted with premium 2618 alloy forgings, these pistons provide superior strength and resilience under demanding conditions, making them ideal for both street and race applications. The set features cam and barrel (skirt) profiles engineered to maximize power output while minimizing stress on cylinder walls, ensuring reliable operation over time.

The pistons are equipped with chrome moly wrist pins as standard, with options for upgraded 9310 or Turbo Tuff/DLC alloys for enhanced durability in high-stress environments. Strict manufacturing standards govern the ring lands and grooves, resulting in an optimal seal for improved compression and increased power. Unique fixturing techniques allow for precise skirt turning and ring groove machining in a single operation, guaranteeing ring and skirt squareness for consistent performance.

This piston set comes with a 100mm stroke and +.5mm bore, offering a compression ratio of 8.5:1 suitable for turbocharged setups. It is compatible with various Subaru Impreza models, making it a versatile choice for engine builders seeking reliable, high-quality components. Please note that this product is not CARB approved and requires acknowledgment of this status during installation. Manley’s signature design ensures your engine maintains optimal compression and power, whether for daily driving or competitive racing. The set also complies with Prop 65 standards, ensuring safety and environmental responsibility.

Trust Manley Performance for superior engine components that meet professional standards, backed by decades of expertise in high-performance applications. This piston set is a critical upgrade for enthusiasts aiming to enhance their vehicle’s performance and longevity.

Features:

• 2618 alloy forgings for superior strength and durability

• Cam and barrel (skirt) profiles engineered for maximum power

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

• Exacting ring lands and grooves for enhanced seal and performance

• Unique fixturing for precise skirt turning and ring groove machining

• Designed for Subaru Impreza models with 100mm stroke and +.5mm bore

• Achieves an 8.5:1 compression ratio suitable for turbo applications

• Not CARB approved; requires acknowledgment of status

• Meets Prop 65 safety standards

Fitment:
Subaru Impreza WRX STI 2004
Subaru Impreza WRX STI 2005
Subaru Impreza WRX STI 2006
Subaru Impreza WRX STI 2007
Subaru Impreza WRX STI 2008
Subaru Impreza WRX STI 2009
Subaru Impreza WRX STI 2010
Subaru Impreza WRX STI 2011
Subaru Impreza WRX STI 2012
Subaru Impreza WRX STI Limited 2007
Subaru Impreza WRX STI Limited 2011
Subaru Impreza WRX STI Limited 2012
Subaru Impreza WRX STI Special Edition 2010