Manley 632000C-4 Platinum Series Forged Piston Set Bore Subaru - 99.5mm EJ257

The Manley 632000C-4 Platinum Series forged piston set is engineered for Subaru EJ257 engines in de-stroked configurations. This complete 4-piston kit features a 99.5mm standard bore, 75mm stroke compatibility, and 8.5:1 compression ratio, making it ideal for high-performance street and track applications.

Advanced Engineering Features:

• 2618 aluminum alloy forgings for superior strength and heat resistance
• Proven cam and barrel skirt profiles for maximum power while protecting cylinder walls
• Moly-coated skirts for reduced friction and quiet operation
• Offset wrist pin design for quiet cold starts
• Precision-machined ring grooves ensure perfect ring seal and maximum horsepower
• Accommodates +1mm oversized valve pockets for performance builds

Complete Kit Includes:

• Four forged pistons (439 grams each)
• Premium 4130 chrome moly wrist pins (23mm diameter)
• Premium steel top ring sets from Total Seal
• Round wire locks

Designed with a 142mm rod length and 201mm block height compatibility, these pistons utilize Manley's unique single-fixturing manufacturing method that ensures perfect ring groove to skirt squareness. Compatible with replacement ring set 46995DT-4. Manufactured in the USA, these pistons are trusted by professional engine builders and tuners worldwide for superior performance and long-term durability.