Manley 612202C-4 Platinum Series Forged Piston Set Subaru - EJ257 99.75mm 8.5 1

The Manley 612202C-4 Platinum Series Forged Piston Set is engineered for high-performance Subaru EJ257 engines found in WRX STI models. These precision-machined pistons feature a 99.75mm bore (+.25mm oversize) with an 8.5:1 compression ratio and dish design, making them ideal for turbocharged applications requiring enhanced strength and reliability.

Key Features:

• 2618 alloy forgings for superior strength and heat resistance
• 1.209-inch compression distance with 79mm stroke compatibility
• Offset wrist pin design for reduced noise during cold starts
• Precision one-fixturing manufacturing ensures perfect ring groove to skirt squareness for maximum horsepower
• Moly-coated skirts on select applications for reduced friction
• Accommodates +1mm oversized valves for performance builds
• Piston weight: 414 grams each

Complete Kit Includes:

• Premium chrome moly wrist pins
• Total Seal premium steel top ring sets with Napier style second rings
• Round wire locks
• Higher tension oil rings for superior oil control

Manley's signature Platinum Series pistons are trusted by professional engine builders and tuners worldwide. The proven cam and barrel skirt profiles, combined with exacting ring land and groove specifications, deliver enhanced ring seal and long service life even under extreme boost conditions.