Manley 612202C-1 Platinum Series Forged Piston Bore Compression - 99.75mm 8.5 1 EJ257

The Manley 612202C-1 Platinum Series Piston is a high-performance forged piston designed for Subaru EJ257 engines. This single piston features a 99.75mm bore size (+0.25mm oversize) with an 8.5:1 compression ratio and dish configuration, making it ideal for turbocharged applications and engine rebuilds.

Key Features:

• Forged from premium 2618 aluminum alloy for exceptional strength and durability
• 99.75mm bore diameter (+0.25mm oversize) with 1.209-inch compression height
• 8.5:1 compression ratio with dish design optimized for forced induction
• Cam and barrel skirt profiles for maximum power while protecting cylinder walls
• Molybdenum disulfide (moly) skirt coating reduces friction and wear
• Offset wrist pin design for quieter cold starts and reduced piston slap
• Precision-machined ring grooves for enhanced ring seal and power output
• Includes premium chrome-moly wrist pin, piston rings, and round wire locks
• Compatible with standard 79mm stroke EJ257 engines

Manley's unique single-operation fixturing ensures perfect ring groove to skirt squareness for superior performance. Each Platinum Series piston is manufactured to exacting tolerances and features lightweight yet robust construction for long service life in high-performance and racing applications. The included Total Seal ring set features premium steel top rings with Napier-style second rings and higher tension oil rings for excellent oil control under boost.