Manley 04+ Subaru WRX/STI EH257 99.75mm Bore +.25mm Size 8.5:1 Dish Extreme Duty Piston Set
$1,019.99
Our signature "Platinum Series" pistons feature 2618 alloy forgings, proven cam and barrel skirt profiles, tool steel wrist pins, and moly skirt coatings on select part numbers. Join the ranks of professional engine builders and tuners who rely on Manley pistons for superior performance and durability.
Manley Piston Set, SUBARU 99.75mm/1.209 CD/DIS Extreme Duty
Manley Piston Set, SUBARU 99.75mm/1.209 CD/DIS E/D.
- Chrome Moly Wrist Pins: Premium Chrome Moly wrist pins come standard with our Standard Series Pistons. For select SKUs, we offer wrist pin upgrades to 9310 and Turbo Tuff/DLC alloys, providing additional durability.
- Unique Fixturing: Manley's unique fixturing allows for skirt turning and ring groove machining in a single operation, ensuring ultimate ring groove to skirt squareness.
- Exacting Ring Lands and Grooves: We adhere to strict standards for piston ring lands and grooves, resulting in enhanced ring seal and more power.
- Cam and Barrel Profiles: Our pistons boast cam and barrel (skirt) profiles that generate substantial power while being gentle on cylinder walls.
- 2618 Alloy Forgings: We use domestic 2618 alloy forgings, ensuring superior strength and performance.
The Manley Performance Subaru WRX/STI 99.75mm Bore Extreme Duty Piston Set is engineered for high-performance engine builds, offering unmatched durability and power. Crafted from high-quality 2618 alloy forgings, these pistons provide exceptional strength and resilience under demanding conditions. The unique cam and barrel (skirt) profiles are designed to generate substantial power while maintaining a gentle interaction with the cylinder walls, ensuring longevity and consistent performance. The pistons feature precise ring lands and grooves that optimize ring sealing, contributing to increased compression and overall engine efficiency.
Manley's signature fixturing technology allows for single-operation skirt turning and ring groove machining, ensuring perfect squareness and fitment. The pistons come standard with chrome moly wrist pins, with optional upgrades to 9310 or Turbo Tuff/DLC alloys for enhanced durability in extreme applications. These pistons are specifically designed for Subaru models with a 99.75mm bore and a 8.5:1 compression ratio, making them ideal for turbocharged or high-performance builds.
Whether you're a professional engine builder or a serious tuner, you can rely on Manley pistons to deliver superior performance and long-term reliability. Please note, these pistons are not carb-approved and require carb acknowledgment prior to installation. They are not suitable for air freight and must be shipped via freight services. Proper installation ensures optimal engine performance and durability, making these pistons a valuable upgrade for your Subaru engine project.
Features:
- 2618 alloy forgings for superior strength and durability
- Unique fixturing for precise skirt turning and ring groove machining
- Exacting ring lands and grooves for improved seal and power
- Cam and barrel profiles designed for high power output
- Standard chrome moly wrist pins with optional high-performance upgrades