CP Pistons and Ring Set for Subaru EJ257 WRX STi - 100.5mm Bore, +1.0mm Oversize, 8.2 Compression Ratio

CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100.5mm) - Size (+1.0mm) - CR (8.2) Set of 4

Upgrade your Subaru WRX STi with the CP Pistons and Ring Set designed specifically for the EJ257 engine. This set includes four high-quality pistons with a bore diameter of 100.5mm and a size increase of +1.0mm, providing precise fitment and enhanced performance. The pistons feature a compression ratio of 8.2, optimized for improved power output and efficiency. Crafted from durable materials, these components are engineered to withstand high-stress conditions typical in high-performance applications. Whether rebuilding or upgrading your engine, these pistons are a reliable choice for maintaining engine integrity and maximizing performance.

The set is compatible with various Subaru Impreza models from 2004 to 2012, including the 2005, 2006, and 2007 WRX STi versions. Installation requires proper engine knowledge and tools, and it is recommended to have a professional mechanic handle the assembly to ensure proper fit and function. The pistons are not CARB approved, and appropriate acknowledgment of this is required during installation, making them suitable for off-road or racing applications rather than street use. Trust CP Pistons for quality and performance in your Subaru engine rebuild or upgrade project.

Features:

• High-quality pistons designed for Subaru EJ257 engines

• Bore diameter of 100.5mm for precise fitment

• Oversize (+1.0mm) for rebuilding or performance upgrades

• Compression ratio of 8.2 optimized for power and efficiency

• Set includes four durable pistons suitable for high-stress conditions

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

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