Manley Performance Subaru EJ257 99.75mm +.25mm Bore Platinum Series Piston Set with Rings

Description

The Manley Performance Subaru EJ257 Platinum Series piston set offers high-performance components designed for durability and superior power output. Crafted from 2618 alloy forgings, these pistons provide exceptional strength and resilience, making them ideal for demanding engine applications. The use of domestic 2618 alloy ensures consistent quality, and the pistons feature precisely engineered cam and barrel profiles that optimize power delivery while minimizing stress on cylinder walls.

The set includes Chrome Moly wrist pins as standard, with options for upgrades to 9310 or Turbo Tuff/DLC alloys for enhanced durability. Strict manufacturing standards are maintained for ring lands and grooves, which improve ring seal and boost overall engine performance. Unique fixturing during production allows for skirt turning and ring groove machining in a single operation, ensuring perfect ring to skirt squareness for reliable sealing and power.

Designed specifically for Subaru EJ257 engines with a 99.75mm bore and +.25mm oversize, this piston set features a compression ratio of 8.5:1, making it suitable for various tuning setups. The moly skirt coatings on select part numbers reduce friction and wear, prolonging piston life under high-stress conditions. Manley’s Platinum Series pistons are trusted by professional engine builders and tuners for their combination of performance, craftsmanship, and durability. Please note that this product requires carb acknowledgment and is not CARB approved. For safe transportation, air freight is prohibited, but LTL freight is not necessary, simplifying shipping logistics.

Whether building a high-performance street engine or a track-ready setup, these pistons deliver consistent, reliable results, ensuring your Subaru EJ257 engine performs at its peak. Experience the quality and engineering excellence that Manley Performance brings to the automotive aftermarket industry.

Features:

• 2618 alloy forgings for superior strength and durability

• Cam and barrel (skirt) profiles designed for optimal power and minimal cylinder wall stress

• Chrome Moly wrist pins standard, with upgrade options to 9310 and Turbo Tuff/DLC alloys

• Exacting ring lands and grooves to enhance ring seal and engine power

• Unique fixturing allows for skirt turning and ring groove machining in a single operation

• Moly skirt coatings on select part numbers reduce friction and wear

• Designed specifically for Subaru EJ257 engines with a 99.75mm bore and +.25mm oversize

• Compression ratio of 8.5:1 suitable for various tuning applications

• Requires carb acknowledgment; not CARB approved

• Air freight prohibited; LTL freight not required for shipping