Manley 04+ Subaru WRX/STi (EJ257) 75mm DE-Stroker 100.00mm +.50mm Size Bore 8.5:1 Dish Piston Set
$892.99
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 100mm/1.285 CD/DISH T/T.
- 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.
Upgrade your Subaru WRX or STI engine with the Manley Performance EJ257 75mm DE-Stroker Piston Set, part number man632005C-4. Designed with professional engine builders in mind, this set features high-strength 2618 alloy forgings that deliver exceptional durability and performance for demanding applications. The pistons incorporate proven cam and barrel skirt profiles to generate substantial power while being gentle on your engine’s cylinder walls, ensuring longevity and reliable performance. Each piston is crafted with precise ring land and groove dimensions to optimize ring seal, which translates into increased horsepower and efficiency.
Manley’s unique fixturing process allows for accurate skirt turning and ring groove machining in a single step, guaranteeing consistency and perfect squareness between the ring land and skirt. Equipped with chrome moly wrist pins as standard, select models offer upgraded options to 9310 or Turbo Tuff/DLC alloys, providing added strength for high-stress environments.
These pistons are finished with moly skirt coatings on select part numbers, reducing friction and wear under high loads. The set is specifically designed for a 100mm bore with a +.50mm oversize, accommodating larger displacement builds with an 8.5:1 compression ratio for a balance of power and reliability. Please note this product is not CARB approved and requires acknowledgment of this fact prior to purchase. It is not intended for use on emissions-controlled vehicles, but is ideal for performance tuning and racing applications.
Built to meet strict standards, the Manley Platinum Series pistons ensure consistent quality, making them a preferred choice among professional tuners and engine builders seeking maximum performance and durability from their Subaru engines.
Features:
- 2618 alloy forgings for superior strength and durability
- Proven cam and barrel skirt profiles for optimal power output
- Chrome moly wrist pins standard; options for 9310 and DLC alloys
- Unique fixturing for precise skirt turning and ring groove machining
- Exacting ring lands and grooves for enhanced sealing and power
- Moly skirt coatings on select part numbers to reduce friction
- Designed for 100mm bore with +.50mm oversize and 8.5:1 compression ratio
- Part of Manley's Platinum Series for high-performance applications
- Includes piston set tailored for Subaru WRX/STi EJ257 engine