JE Pistons 291062 100mm 8.5:1 CR Piston Kit for 2004-2021 Subaru WRX/STI EJ257

Vehicle Fitment

• 2004-2021 Subaru WRX/STI (EJ257, AWD)

Features

• Precision forged from 2618 T6 high tensile aluminum alloy
• Designed for high-performance and extreme applications
• Inverted dome/dish piston head configuration
• Compression ratio: 8.5:1
• Bore diameter: 100.00 mm (3.937 inches)
• Compression height: 1.209 inches (30.7 mm)
• Piston volume: -17.40 cc
• Average piston weight: 413 grams
• Piston pin diameter: 0.905 inches (22.98 mm)
• Piston pin length: 2.250 inches (57.15 mm)
• Includes JE's JC4404-3928 ring set
• FSR (Full Skirt Radius) forging for enhanced strength

Specifications

• Material: 2618 T6 high tensile forged aluminum
• Piston head type: Inverted dome/dish
• Compression ratio: 8.5:1
• Bore diameter: 100.00 mm (3.937 inches)
• Compression height: 1.209 inches (30.7 mm)
• Piston volume: -17.40 cc
• Piston pin diameter: 0.905 inches (22.98 mm)
• Piston pin length: 2.250 inches (57.15 mm)
• Average piston weight: 413 grams
• Ring set included: Yes (JE's JC4404-3928)
• Forging type: FSR (Full Skirt Radius)

Included Components

• 4x JE Pistons 291062
• 4x JE Piston Pins (0.905 inches x 2.250 inches)
• 4x JE Piston Pin Clips
• 1x JE Ring Set JC4404-3928

Product Description

The JE Pistons 291062 Piston Kit is engineered for Subaru enthusiasts seeking top-tier performance. Crafted from 2618 T6 high tensile forged aluminum, these pistons are designed to withstand extreme conditions, making them ideal for both street and track applications. The inverted dome/dish design and 8.5:1 compression ratio provide optimal combustion efficiency for the EJ257 engine.

With a 100.00 mm bore and 1.209-inch compression height, these pistons are tailored for the 2004-2021 Subaru WRX and STI models equipped with the EJ257 engine. The kit includes JE's JC4404-3928 ring set, ensuring a complete overhaul for your engine. Whether you're building a daily driver or a competition-ready setup, the JE Pistons 291062 Piston Kit offers the reliability and performance you demand.