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Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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Piston Sets - Forged - 4cyl
Our collection of forged 4-cylinder piston sets is built for enthusiasts pushing the limits of their small-displacement engines. Forged from high-strength aluminum alloys, these pistons withstand elevated boost pressure, higher RPMs, and the demands of track or street performance—far beyond what cast pistons can handle.
When choosing a set, pay attention to these details to ensure a proper match:
- Bore & Stroke: Matches your engine's specific cylinder dimensions; available in standard, oversize, and custom diameters.
- Compression Ratio: Choose a dome, flat-top, or dished design to target your desired static compression for pump gas, E85, or race fuel.
- Alloy & Skirt Design: 2618 alloy for extreme high-load applications, 4032 for tighter clearances and street manners. Slotted skirts or strutted designs affect strength and noise.
- Package Contents: Most sets include pistons, rings, wrist pins, and locks. Verify what's included for your selected part number.
Forged pistons are the foundation of a reliable high-output 4-cylinder engine. Whether you're building a turbocharged street car, an N/A screamer, or a dedicated race motor, you'll find options here to suit your power goals and budget.
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Engineered for high-performance Nissan KA24 builds, these Supertech pistons are designed to manage the thermal and mechanical stresses of increased power output. This set of four features a precision-machined 89.50mm bore and a -23cc dish volume, yielding a 9.0:1 compression ratio suitable for various performance applications.
- Engine Fitment: Nissan KA24
- Bore Diameter: 89.50mm
- Dish Volume: -23cc
- Compression Ratio: 9.0:1
- Quantity: Set of 4 pistons
- Manufacturer Part Number: P4-N895-N23
Note: This set includes the pistons only; piston rings are excluded and must be sourced separately for installation.
Fits Mini R56 N18 JCW models (1.6T).
These Supertech high-performance forged pistons are engineered specifically for the Mini N18 engine platform. Built to handle the increased thermal and mechanical loads of modified turbocharged engines, these pistons feature a 77.50mm bore and a 10:1 compression ratio, providing a robust foundation for your John Cooper Works build. Precision-machined from high-strength alloys, they offer the durability required for performance driving and high-boost applications.
- Manufacturer Part Number: P4-MIN56-N18-77.5-CR10
- Fitment: Mini R56 N18 JCW (1.6T)
- Bore Diameter: 77.50mm
- Compression Ratio: 10:1
- Quantity: Set of 4 pistons
- Installation Note: Requires ring set GNH07750 (Excludes rings)
Optimized for high-output forced induction builds, this set of Supertech forged pistons is engineered specifically for the Mazdaspeed 2.3L engine. These pistons feature an 87.5mm bore and a -14cc dish volume to achieve a 9.5:1 compression ratio, providing a robust foundation for increased boost pressures while maintaining combustion efficiency.
- Bore Diameter: 87.5mm
- Compression Ratio: 9.5:1
- Dish Volume: -14cc
- Quantity: Set of 4 pistons
- Manufacturer Part Number: P4-MASP8750-10H13
Note: This set includes pistons only. Piston rings are not included and must be sourced separately for installation.
Fits Mazda Miata (1.8L).
This set of four Supertech performance pistons is engineered for Mazda Miata 1.8L powerplants, providing a calculated 11:1 compression ratio for high-response builds. These pistons feature an 85mm bore and a +10cc dome volume, designed to optimize combustion efficiency and withstand the increased thermal loads of a modified engine.
Built to precise tolerances, these components replace the factory pistons to provide a more durable rotating assembly foundation. Please note that this kit includes the pistons only; piston rings must be sourced separately to complete the installation.
- Manufacturer Part Number: P4-MA85-P10
- Bore Diameter: 85mm
- Compression Ratio: 11:1
- Dome Volume: +10cc
- Quantity: Set of 4 Pistons
- Rings: Not Included
Fits Mazda Miata models equipped with the 1.8L engine.
Engineered for high-performance builds, these Supertech forged pistons are designed to handle the thermal and mechanical stresses of high-output Mazda BP-series engines. Featuring an 84mm bore and a 2.5cc dome volume, this set provides a 9.5:1 compression ratio (CR), making them an ideal choice for enthusiasts looking to strengthen their rotating assembly for forced induction or precision naturally aspirated applications.
- Bore Diameter: 84mm
- Dome Volume: 2.5cc
- Compression Ratio: 9.5:1
- Fitment: Mazda 1.8L engines
- Quantity: Set of 4 pistons
- Manufacturer Part Number: P4-MA84-P2
Please Note: This set includes the pistons only; piston rings are not included (Excl Rings) and must be sourced separately to match your specific application requirements.
Designed for high-compression performance builds, this set of four Supertech pistons is engineered specifically for the Mazda Miata 1.8L engine. With an 84mm bore and a 10.5cc dome volume, these pistons achieve an 11:1 compression ratio to maximize thermal efficiency and power output in naturally aspirated applications.
- Bore Size: 84mm
- Dome Volume: 10.5cc
- Compression Ratio: 11:1
- Engine Fitment: Mazda Miata (1.8L)
- Quantity: Set of 4 Pistons
- Manufacturer Part Number: P4-MA84-P10
- Note: Piston rings are not included and must be purchased separately
Supertech pistons are manufactured to precise tolerances to withstand the increased cylinder pressures and high-RPM demands of performance driving. Each piston is designed to optimize combustion while maintaining structural integrity under heavy thermal loads.
Designed for high-performance builds, this set of four Supertech pistons is engineered to handle the thermal and mechanical stresses of modified Mazda Miata 1.8L engines. With an 84mm bore and a -4cc dish volume, these pistons achieve a 9:1 compression ratio, making them an ideal choice for forced induction setups or high-output street builds.
Supertech manufactures these pistons using high-strength alloys to provide the structural integrity required for applications rated up to 560HP and 30 PSI of boost. These pistons offer superior heat dissipation and tighter tolerances compared to factory components, ensuring reliable performance under extreme racing conditions.
- Fits: Mazda Miata (1.8L)
- Bore Diameter: 84mm
- Compression Ratio: 9:1
- Volume: -4cc
- Power/Boost Rating: 560HP / 30PSI
- Quantity: Set of 4
- Manufacturer Part Number: P4-MA84-CR9
- Note: Piston rings are not included and must be purchased separately
Fits Mazda Miata models equipped with the 1.8L engine. This set of four Supertech pistons is engineered for high-performance builds that demand tight tolerances and superior thermal management. Featuring an 83.5mm bore and a +2.5cc dome volume, these pistons achieve a 9.5:1 compression ratio (CR), making them an ideal choice for both naturally aspirated and forced induction setups looking for a balance of power and knock resistance.
- Engine Compatibility: 1.8L
- Bore Diameter: 83.5mm
- Dome Volume: +2.5cc
- Compression Ratio: 9.5:1
- Quantity: Set of 4 (Excludes Piston Rings)
- Manufacturer Part Number: P4-MA8350-P2
Fits Mazda Miata (1.8L).
These Supertech performance pistons are engineered to meet the tight tolerances and thermal demands of high-output Mazda 1.8L engines. Featuring an 83.5mm bore and an 8.6:1 compression ratio, this set is specifically designed with a -4cc dish profile to manage cylinder pressures effectively in performance or forced-induction applications.
- Manufacturer Part Number: P4-MA8350-N4
- Bore Size: 83.5mm
- Compression Ratio: 8.6:1
- Dome/Dish Volume: -4cc Dish
- Quantity: Set of 4 pistons
- Note: Piston rings are not included (Excl Rings)
Supertech pistons are manufactured from high-strength alloys to provide enhanced durability over factory components, ensuring reliable operation during high-RPM use or increased boost levels. This kit includes the pistons only; rings must be sourced separately to complete the installation.
Fits Mazda Miata models equipped with the 1.6L engine.
This set of four Supertech performance pistons is precision-engineered for Mazda 1.6L engine builds requiring a 79.0mm bore diameter. Featuring a -10.5cc dish design to achieve an 8.8:1 compression ratio, these pistons are an ideal choice for forced induction or high-performance street applications where lower compression is necessary for tuning stability and reliability.
- Engine Compatibility: Mazda 1.6L
- Bore Diameter: 79.0mm
- Compression Ratio: 8.8:1
- Dish Volume: -10.5cc
- Quantity: Set of 4 pistons
- Manufacturer Part Number: P4-MA790-N10
Note: This set excludes piston rings. Compatible ring sets must be sourced separately to complete the installation.
Engineered for high-performance Mazda Miata builds, this set of Supertech pistons provides a precision-engineered solution for the 1.6L engine. These pistons feature a 79.0mm bore and a flat top profile, resulting in a 10.6:1 compression ratio designed to optimize combustion efficiency and power delivery in naturally aspirated or mild forced induction applications.
Supertech pistons are manufactured using advanced forging processes and specific alloys to handle the increased thermal and mechanical stresses of performance driving. Each piston is designed with a -3.7cc dome volume and specific tolerances to ensure long-term reliability and consistent cylinder sealing when paired with the appropriate ring set.
- Manufacturer Part Number: P4-MA790-N1
- Engine Compatibility: Mazda 1.6L
- Bore Size: 79.0mm
- Compression Ratio: 10.6:1
- Dome Volume: -3.7cc
- Piston Style: Flat Top
- Quantity: Set of 4 Pistons
- Note: Piston rings are NOT included and must be purchased separately.
Designed for high-performance Mazda 1.6L engine builds, this set of Supertech forged pistons provides the durability and precision required for forced induction or spirited street applications. These pistons feature a 78.50mm bore, representing a +0.50mm oversize from stock, and a -10.5cc dish volume that yields an 8.8:1 compression ratio. This lower compression setup is ideal for tuners looking to run higher boost levels while maintaining a safe margin against detonation.
- Fits Mazda Miata (1.6L)
- Bore: 78.50mm (+0.50mm overbore)
- Dish Volume: -10.5cc
- Compression Ratio: 8.8:1
- Quantity: Set of 4 pistons
- Manufacturer Part Number: P4-MA785-N10
- Note: Piston rings are not included and must be sourced separately.
Designed for high-output naturally aspirated performance, this set of Supertech pistons is engineered specifically for Honda K24 blocks paired with K20 cylinder heads—the classic "Frankenstein" engine build. With an 87.5mm bore and a +4.0cc dome volume, these pistons achieve a 12.5:1 compression ratio, providing the necessary thermal efficiency and combustion pressure for aggressive street and track applications.
- Fits Honda K24 engines with K20 head conversions
- Bore Diameter: 87.5mm
- Compression Ratio: 12.5:1
- Dome Volume: +4.0cc
- Set includes 4 pistons
- Piston rings are not included
- Manufacturer Part Number: P4-HK875-P4
Designed for high-performance Honda "Frankenstein" builds, these Supertech pistons are engineered for K24 series engine blocks utilizing K20 cylinder heads. This set provides a precise 87mm bore and a +4.5cc dome volume to achieve a 12.5:1 compression ratio, ideal for naturally aspirated racing applications where maximum thermal efficiency and power are required.
- Manufacturer Part Number: P4-HK87-P4
- Fitment: Honda K24 block with K20 cylinder head
- Bore Diameter: 87mm
- Compression Ratio: 12.5:1
- Dome Volume: +4.5cc
- Quantity: Set of 4 pistons
- Note: Piston rings are not included and must be purchased separately.
Fits Ford Duratec engines (2.3L).
This Supertech performance piston set is engineered specifically for the Ford Duratec 2.3L platform, providing the structural integrity required for high-output engine builds. Designed to handle increased thermal and mechanical loads, these pistons are an essential upgrade for builders seeking reliable performance and precise tolerances. The -20cc dish profile is optimized for achieving a 9.3:1 compression ratio, making them a versatile choice for various performance configurations.
- Bore Diameter: 89.5mm
- Compression Height: 1.122in
- Dish Volume: -20cc
- Compression Ratio: 9.3:1
- Quantity: Set of 4 pistons
- Note: Piston rings are not included (Excl Rings)
- Manufacturer Part Number: P4-DU8950-N20-H13
Optimized for high-output Ford 2.3L engine builds, this set of Supertech performance pistons provides the strength and thermal stability required for demanding applications. Precision-engineered from high-strength alloys, these pistons are designed to handle increased cylinder pressures and improved heat dissipation compared to standard OE components.
- Manufacturer Part Number: P4-DU89-N20-H13
- Bore Diameter: 89mm
- Compression Height: 1.122in
- Dish Volume: -20cc
- Compression Ratio: 9.1:1
- Quantity: Set of 4 Pistons
Please note: This set (MPN: P4-DU89-N20-H13) does not include piston rings; they must be sourced separately to complete your assembly.
Designed for high-performance Nissan SR20DE and SR20DET engines, this Manley Platinum Series piston set is engineered to handle the thermal and mechanical stresses of increased boost and high-RPM operation. These pistons are forged from domestic 2618 alloy for superior structural integrity and feature a 9.0:1 dish profile ideal for forced induction setups. Manley utilizes a unique single-operation fixturing process for skirt turning and ring groove machining, ensuring perfect squareness for a superior ring seal and maximum power output.
The 86.5mm (+0.5mm oversized) bore provides a displacement increase and requires a precision overbore of the factory cylinder block. Each set includes high-quality piston rings and premium Chrome Moly wrist pins, which are standard for this series to provide the durability required by professional engine builders and tuners.
- Fits Nissan SR20DE and SR20DET engines
- Material: High-strength 2618 alloy forgings
- Bore: 86.5mm (+0.5mm Oversized)
- Compression Ratio: 9.0:1 Dish
- Includes: Pistons, rings, and Chrome Moly wrist pins
- Precision cam and barrel skirt profiles for reduced cylinder wall wear
- Single-operation machining for ultimate ring-to-skirt squareness
- Manufacturer Part Number: 638005C-4
Engineered for high-performance Ford 2.3L EcoBoost applications, this Manley Platinum Series Extreme Duty Piston Set is built to handle the extreme cylinder pressures of forced induction. Forged from domestic 2618 alloy, these pistons feature specialized cam and barrel skirt profiles that optimize power output while remaining gentle on cylinder walls for long-term durability.
Manley utilizes a unique manufacturing process where skirt turning and ring groove machining are performed in a single operation. This ensures absolute squareness between the ring groove and the skirt, providing a superior ring seal and increased power. These pistons are designed to accommodate up to +1mm oversized valves, making them ideal for builds with upgraded cylinder heads.
- Fits Ford 2.3L EcoBoost engines (2.3L)
- Bore Size: 87.5mm (Standard)
- Compression Ratio: 9.5:1 Dish
- Material: High-strength 2618 forged aluminum alloy
- Wrist Pins: Included Premium Chrome Moly steel pins
- Hardware: Includes premium steel top ring sets and round wire locks
- MPN: 637000CE-4
Designed for high-performance Ford 2.3L EcoBoost builds, this Manley Platinum Series piston set is engineered to withstand the rigors of increased boost and cylinder pressures. Each piston is forged from high-strength domestic 2618 aluminum alloy and features precision-machined cam and barrel skirt profiles to minimize friction while protecting cylinder walls.
- Engine Fitment: Ford 2.3L EcoBoost (2.3L)
- Bore Size: 87.5mm (Standard Size)
- Compression Ratio: 9.5:1 with dish profile
- Material: Forged 2618 aluminum alloy for superior strength
- Valve Clearance: Designed to accommodate +1mm oversized valves
- Machining: Skirt and ring grooves machined in a single operation to ensure perfect squareness and optimal ring seal
- Included Components: Premium Chrome Moly wrist pins, high-performance steel top ring sets, and round wire locks
- Coating: Moly-coated skirts for reduced friction and improved wear resistance
- Manufacturer Part Number: 637000C-4
Fits Ford 2.0L EcoBoost engines. These Manley Platinum Series Extreme Duty pistons are engineered for high-performance applications where increased boost and cylinder pressures demand superior strength.
Forged from domestic 2618 aluminum alloy, these pistons feature a dish design and specific cam and barrel skirt profiles that maximize power while minimizing wear on cylinder walls. Manley utilizes a unique fixturing process that allows skirt turning and ring groove machining to be completed in a single operation. This ensures absolute squareness between the ring groove and the skirt, resulting in an exceptional ring seal and improved oil control.
- Manufacturer Part Number: 636005CE-4
- Engine Compatibility: Ford 2.0L EcoBoost
- Bore Size: 88mm (+.5mm oversize)
- Compression Ratio: 9.3:1
- Material: 2618 Forged Aluminum Alloy
- Wrist Pins: Premium Chrome Moly pins included
- Design: Dish-style Extreme Duty forging
- Features: Moly-coated skirts and precision-machined ring lands
Designed for Ford 2.0L EcoBoost engines, this Manley Platinum Series piston set (MPN 636005C-4) provides the strength and precision required for high-boost applications. Built from domestic 2618 aluminum alloy forgings, these pistons are engineered to withstand extreme cylinder pressures while maintaining structural integrity.
Manley employs a unique manufacturing process where skirt turning and ring groove machining are performed in a single operation. This technique ensures maximum squareness between the ring lands and the piston skirt, which is essential for achieving a superior ring seal and minimizing blow-by. The pistons feature specialized cam and barrel skirt profiles designed to reduce friction and wear on cylinder walls without compromising power output.
- Manufacturer Part Number: 636005C-4
- Material: 2618 High-Strength Forged Aluminum Alloy
- Bore Size: 88mm (+.5mm oversize)
- Compression Ratio: 9.3:1
- Piston Style: Dish
- Wrist Pins: Premium Chrome Moly steel included
- Features: Moly-coated skirts (on select applications) and precision-machined ring grooves
Engineered for high-output Ford 2.0L EcoBoost builds, this Manley Platinum Series Extreme Duty Piston Set (MPN 636000CE-4) is designed to withstand the rigors of high-boost applications. These pistons are forged from domestic 2618 aluminum alloy, providing superior structural integrity and heat resistance compared to standard cast or hypereutectic components.
Each piston features Manley's signature cam and barrel skirt profiles, optimized to reduce cylinder wall friction while maintaining stability at high RPM. The 9.3:1 dish design is precision-machined using a unique single-operation fixturing process that ensures the ring grooves are perfectly square to the skirt for an exceptional ring seal and maximum power extraction.
- Material: High-strength 2618 alloy forgings
- Bore Size: 87.5mm (Standard)
- Compression Ratio: 9.3:1 Dish profile
- Wrist Pins: Premium Chrome Moly pins included
- Precision Machining: Single-operation skirt and ring groove turning for ultimate squareness
- Optimized Profiles: Cam and barrel skirt designs to minimize cylinder wall wear
- Series: Platinum Series / Extreme Duty
Fits Ford 2.0L EcoBoost engines.
The Manley Platinum Series Piston Set for the Ford 2.0L EcoBoost is engineered for high-performance builds requiring superior material strength and precise tolerances. These pistons are manufactured from domestic 2618 alloy forgings, utilizing a dish design that maintains a 9.3:1 compression ratio at the standard 87.5mm bore size.
Manley employs a specialized fixturing process that performs skirt turning and ring groove machining in a single operation. This ensures absolute squareness between the ring groove and the skirt, which is critical for establishing a consistent ring seal and maximizing power. The cam and barrel skirt profiles are optimized to provide stability under high cylinder pressures while remaining gentle on the cylinder walls.
- Series: Platinum Series
- Material: Domestic 2618 alloy forgings
- Bore Size: 87.5mm (STD)
- Compression Ratio: 9.3:1
- Piston Style: Dish
- Wrist Pins: Premium Chrome Moly pins included
- Coating: Moly skirt coating
- Manufacturing: Single-operation skirt and ring groove machining
- Manufacturer Part Number: 636000C-4
Fits 2015+ Subaru WRX (FA20 engine).
Manley Platinum Series pistons are engineered for high-output FA20 builds, utilizing domestic 2618 aluminum alloy forgings for maximum structural integrity under high cylinder pressures. This set features an 86.50mm bore (+.5mm overbore) and a 10:1 dish profile, designed to optimize combustion efficiency while maintaining superior ring seal. Each piston is manufactured using Manley’s unique fixturing process, which machines the skirt and ring grooves in a single operation to ensure perfect squareness and precise tolerances.
- Material: High-strength domestic 2618 forged aluminum alloy
- Bore Size: 86.50mm (+.50mm over factory)
- Compression Ratio: 10:1 Dish profile
- Wrist Pins: Premium Chrome Moly steel pins included
- Design: Proven cam and barrel skirt profiles for reduced friction and cylinder wall wear
- Precision: Single-operation machining for exacting ring land and groove squareness
- Manufacturer Part Number: 632705C-4
This complete set includes high-performance piston rings and premium Chrome Moly wrist pins, providing a reliable foundation for professional engine builders and tuners requiring durability beyond factory limits.
Fits 2015-UP Subaru WRX (FA20).
The Manley Platinum Series piston set is engineered for high-performance FA20 builds, providing the strength of domestic 2618 alloy forgings and the precision of advanced manufacturing. This set features an 86.25mm bore (+.25mm oversize) and a 10:1 dish profile, designed to optimize ring seal and power delivery in turbocharged applications. Manley utilizes a unique fixturing process that allows for skirt turning and ring groove machining in a single operation, ensuring ultimate squareness between the grooves and the skirt for maximum efficiency.
- Forged from high-strength domestic 2618 aluminum alloy
- 86.25mm bore size (+.25mm over stock) with 10:1 compression ratio
- Precision cam and barrel skirt profiles designed to be gentle on cylinder walls
- Includes premium Chrome Moly wrist pins and high-performance ring set
- Single-operation machining for maximum ring groove-to-skirt squareness
- Exacting ring land and groove standards for enhanced seal and power
- Manufacturer Part Number: 632702C-4
Fits 2015+ Subaru WRX models equipped with the FA20F engine.
Manley Platinum Series pistons are engineered for professional engine builders and tuners requiring extreme durability in high-output FA20F builds. Forged from domestic 2618 aluminum alloy, these pistons feature a 10.0:1 compression ratio and an 86.1mm bore (+.1mm oversize). Manley utilizes a unique fixturing process that machines the ring grooves and turns the skirts in a single operation, ensuring perfect squareness between the ring groove and skirt for superior ring seal and longevity.
- Material: High-strength forged 2618 aluminum alloy.
- Bore Size: 86.1mm (+.1mm oversize).
- Compression Ratio: 10.0:1 Dish.
- Wrist Pins: Includes premium Chrome Moly wrist pins (upgradable to 9310 or Turbo Tuff/DLC for select applications).
- Precision Machining: Exacting ring land and groove tolerances for enhanced cylinder sealing and power output.
- Advanced Profiles: Proven cam and barrel skirt profiles designed to maximize power while minimizing wear on cylinder walls.
- Manufacturer Part Number: 632701C-4 (Set of 4).
Fits select 2004-Present Subaru WRX and STI models equipped with the EH257 engine.
The Manley Platinum Series Extreme Duty piston set (MPN 632202CE-4) is engineered for high-horsepower builds that demand superior structural integrity. Forged from domestic 2618 aluminum alloy, these pistons are designed to withstand the increased thermal and mechanical loads of high-boost applications. Each piston features Manley's specialized cam and barrel skirt profiles, optimized to generate maximum power while remaining gentle on cylinder walls to reduce friction and wear.
Manufacturing precision is a hallmark of the Platinum Series. Manley utilizes a unique fixturing process that allows for skirt turning and ring groove machining in a single operation. This ensures ultimate squareness between the ring lands and the skirt, resulting in an exceptional ring seal and minimal blow-by. Every set is balanced to exacting tolerances and includes high-quality wrist pins designed for reliable performance.
- Manufacturer Part Number: 632202CE-4
- Bore Size: 99.75mm (+.25mm Oversize)
- Compression Ratio: 8.5:1 Dish
- Material: Domestic 2618 forged aluminum alloy
- Wrist Pins: Premium Chrome Moly wrist pins included
- Skirt Coating: Moly coated skirts for reduced friction
- Machining: Single-operation skirt and ring groove turning for maximum squareness
Fits 2004 and newer Subaru WRX and STI models (EH257).
The Manley Platinum Series forged piston set is engineered for high-performance Subaru builds requiring exceptional strength and precision. Constructed from domestic 2618 aluminum alloy forgings, these pistons are designed to withstand the extreme cylinder pressures of turbocharged applications while maintaining optimal weight and durability.
- 2618 Alloy Forgings: High-strength domestic alloy provides the structural integrity needed for high-boost forced induction.
- Precision Fixturing: Unique machining process allows for skirt turning and ring groove machining in a single operation, ensuring ultimate ring groove to skirt squareness.
- Enhanced Ring Seal: Adherence to strict tolerances for piston ring lands and grooves results in superior ring seal and increased power.
- Optimized Skirt Profiles: Specific cam and barrel profiles generate substantial power while minimizing wear on cylinder walls.
- Included Hardware: Set comes standard with premium Chrome Moly wrist pins for reliable performance.
- Key Specifications: 99.75mm bore (+.25mm oversize), 8.5:1 compression ratio, dish piston design.
- Manufacturer Part Number: 632202C-4
Fits select 2004+ Subaru WRX and STI models equipped with the EJ257 engine.
Built for professional engine builders and high-performance tuners, the Manley Platinum Series piston set is engineered to handle the increased cylinder pressures of turbocharged EJ257 builds. These pistons are forged from domestic 2618 aluminum alloy, offering superior structural integrity compared to factory cast components. Each piston features a 99.50mm standard bore and an 8.5:1 compression ratio dish design, providing the thermal stability required for forced induction.
Manley utilizes a unique single-operation machining process for both skirt turning and ring groove cutting, ensuring perfect squareness between the ring lands and the piston skirt. This precision results in a superior ring seal, reduced blow-by, and consistent power delivery. The skirts feature a specialized cam and barrel profile designed to minimize friction and protect cylinder walls during high-RPM operation.
- Material: High-strength forged 2618 aluminum alloy
- Bore Size: 99.50mm (Standard)
- Compression Ratio: 8.5:1 Dish
- Wrist Pins: Includes high-quality tool steel wrist pins
- Coating: Moly-coated skirts for reduced friction (select applications)
- Manufacturing: Single-operation machining for ultimate ring-to-skirt squareness
- MPN: 632200C-4
Fits 2007-2013 Mazda 3 Mazdaspeed.
Engineered for high-output DISI engines, Manley Platinum Series pistons are designed for professional engine builders who demand superior durability and ring seal. These pistons are machined from high-strength domestic 2618 aluminum alloy forgings and feature a dish-type crown to achieve a 9.5:1 compression ratio. With an 88mm bore (+5mm overbore) and compatibility with a 94mm stroke, this set is built to handle the rigors of increased boost and thermal load.
Manley utilizes a proprietary fixturing process that allows skirt turning and ring groove machining to be completed in a single operation. This ensures ultimate squareness between the ring grooves and the skirt, which is critical for consistent ring seating and oil control. The cam and barrel skirt profiles are specifically engineered to reduce friction and cylinder wall wear while maintaining stability under high cylinder pressures.
- Construction: Domestic 2618 alloy forgings for maximum structural integrity.
- Wrist Pins: Includes premium Chrome Moly wrist pins for reliable pin-boss support.
- Precision Machining: Exacting ring land and groove tolerances for enhanced seal and power.
- Specs: 88mm Bore (+5mm), 94mm Stroke, 9.5:1 CR Dish Type.
- Included: Piston set, wrist pins, and high-performance piston rings.
- Part Number: 630005C-4
🔧 Fitment & Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2007-2013 | Mazda | 3 | Mazdaspeed |
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