Manley 632701C-1 Platinum Series Forged Piston 86.1mm Bore 10:1 Compression Subaru FA20

The Manley 632701C-1 is a high-performance single forged piston designed for 2015+ Subaru WRX FA20F turbocharged engines. This Platinum Series piston features an 86.1mm bore size (0.1mm oversize) with a 10.0:1 compression ratio and a 13cc dish design, making it ideal for forced induction applications requiring precise engine builds.

Key Features:

• Forged from 2618 high-strength aluminum alloy for superior strength and durability under extreme conditions
• 86.1mm bore diameter (0.1mm oversize) with 10.0:1 compression ratio
• 13cc dish configuration optimized for turbocharged applications
• Piston weight: 341 grams for reduced reciprocating mass
• Moly-coated skirts on select applications for reduced friction and wear
• Premium chrome moly wrist pin included (upgrades available to 9310 or Turbo Tuff/DLC alloys)
• Pressure balance groove for enhanced oil control and ring seal
• Offset wrist pin design for quieter cold starts
• Accommodates +1mm oversize valves for performance builds

Precision Manufacturing:

• Unique single-operation fixturing ensures perfect ring groove to skirt squareness
• Proven cam and barrel skirt profiles for maximum piston stability
• Exacting ring land and groove tolerances for enhanced ring seal and power output
• Compatible with Total Seal premium steel top ring sets

Technical Specifications:

• Bore: 86.1mm (Grade C - 0.1mm oversize)
• Compression Height: 1.285 inches (32.64mm)
• Compression Ratio: 10.0:1
• Dish Volume: -13cc
• Rod Length: 5.090 inches (142mm)
• Stroke: 86mm
• Pin Diameter: 22mm
• Piston Weight: 341 grams

Installation Notes:

Manley recommends a piston-to-wall clearance of 0.003 inches for mildly boosted applications and 0.0035 inches for highly boosted applications, measured 0.850-1.100 inches from the bottom of the oil ring groove. This single piston is sold individually for engine rebuilds requiring replacement of specific cylinders. Includes premium chrome moly wrist pin and round wire locks.

Trusted by professional engine builders and tuners worldwide, Manley Performance pistons deliver the durability and precision needed for high-performance forced induction builds. Made in the USA with domestic 2618 alloy forgings.