Designed for the Nissan GT-R VR38DETT (3.8L) engine, this Manley Platinum Series single piston is engineered for high-output builds requiring an 88.4mm stroke and a flat top profile. As a Grade 3 component, it meets the precise dimensional tolerances required by professional engine builders for high-performance applications.

Each piston is forged from domestic 2618 high-strength aluminum alloy. Manley utilizes a unique fixturing process that allows for skirt turning and ring groove machining in a single operation, ensuring exceptional squareness between the ring groove and the skirt. This precision, combined with specialized cam and barrel skirt profiles, enhances ring seal and minimizes cylinder wall friction for maximum durability and power.

• Engine Compatibility: Nissan 3.8L VR38DETT
• Piston Series: Platinum Series
• Piston Style: Flat Top
• Stroke: 88.4mm
• Grade: 3
• Material: Forged 2618 Alloy
• Wrist Pin: Premium Chrome Moly (standard)
• Includes: Single piston, wrist pin, and piston rings
• Optimized ring lands and grooves for superior compression seal

Fits Nissan GT-R models equipped with the 3.8L VR38DETT engine.

Manley Platinum Series pistons are engineered to withstand the extreme cylinder pressures of high-output VR38DETT builds. Forged from domestic 2618 aluminum alloy, these pistons feature a flat-top design and Grade 2 sizing for precise cylinder matching. Each piston undergoes Manley's unique single-operation machining process for the skirt and ring grooves, ensuring absolute squareness for superior ring seal and maximum power delivery.

• Engineered for 88.4mm stroke VR38DETT applications
• Forged from high-strength domestic 2618 aluminum alloy
• Flat top design with Grade 2 sizing
• Includes premium Chrome Moly wrist pin and high-performance ring set
• Moly-coated skirts reduce friction and protect cylinder walls
• Precision-machined cam and barrel profiles for optimal stability
• Single-operation machining ensures perfect ring groove to skirt squareness

Fits Nissan GT-R (3.8L). This Manley Platinum Series Extreme Duty single piston is engineered for the high-cylinder pressures of the VR38DETT engine. Forged from domestic 2618 aluminum alloy, these pistons provide the structural integrity required for high-boost, high-horsepower builds. Each piston is manufactured using a unique fixturing process that machines the skirt and ring grooves in a single operation, ensuring ultimate squareness for a superior ring seal and maximum power production.

• Forged from high-strength domestic 2618 aluminum alloy
• 95.5mm bore and 88.4mm stroke specifications
• Extreme Duty construction for high-output racing applications
• Single-operation machining ensures perfect ring groove to skirt squareness
• Exacting ring land tolerances for enhanced compression seal
• Cam and barrel skirt profiles designed to be gentle on cylinder walls
• Includes premium chrome moly wrist pin and high-performance piston rings

Fits Nissan GT-R models equipped with the 3.8L VR38DETT engine.

Manley Platinum Series Extreme Duty pistons are engineered specifically for high-horsepower Nissan VR38DETT builds. Forged from domestic 2618 aluminum alloy, these Grade 2 flat top pistons are designed to maintain structural integrity under the extreme cylinder pressures of forced induction. Each piston features a 95.5mm bore and utilizes Manley's signature cam and barrel skirt profiles to minimize cylinder wall wear while maximizing power delivery.

Construction quality is ensured through a unique fixturing process that allows skirt turning and ring groove machining to be completed in a single operation. This precision manufacturing results in ultimate squareness between the ring groove and the skirt, providing a superior ring seal. Included with this set are premium Chrome Moly wrist pins and high-performance piston rings to complete the assembly.

• Forged from high-strength domestic 2618 aluminum alloy
• 95.5mm bore diameter with flat top Grade 2 profile
• Precision-machined ring lands and grooves for optimal sealing
• Includes premium Chrome Moly wrist pins and ring set
• Moly skirt coatings applied to select part numbers for reduced friction
• Single-operation machining ensures perfect ring-groove-to-skirt squareness

Engineered for high-performance "Frankenstein" builds, these Wiseco Professional Series forged pistons are designed for Honda K24 blocks paired with K20 cylinder heads. This set delivers a 12.5:1 compression ratio with a +5cc dome volume, providing the durability and thermal stability required for severe-duty racing and high-compression naturally aspirated applications.

Fits select 2002-2011 Acura and Honda RSX, TSX, Accord, CR-V, and Element models with K24/K20 engine configurations.

• Forged from 2618 aluminum alloy for increased tensile strength and resistance to fatigue under extreme cylinder pressures.
• ArmorGlide skirt coating reduces friction and minimizes wear while providing quieter engine operation.
• Precision-machined ring grooves and anti-detonation grooves optimize ring seal and protect the crown from heat damage.
• Forced pin oiling ensures consistent lubrication to the wrist pin for enhanced reliability.
• Fully machined crowns optimized for efficient flame travel and valve clearance.

Included Specs & Fitment:

• Part Number: 6634M875
• Compression Ratio: 12.5:1
• Dome Volume: +5cc
• Material: 2618 Forged Aluminum

Fits select 2002-2011 Acura RSX, TSX and Honda Accord, CR-V, and Element models equipped with K20 or K24 engines.

Wiseco Professional Series forged racing pistons are engineered for high-performance builds that demand exceptional strength and reliability. Machined in the USA from 2618 aluminum alloy, these flat top pistons provide the high tensile strength required for heavy to severe-duty race applications. Each piston features Wiseco’s proprietary ArmorGlide skirt coating to reduce friction, minimize operating noise, and provide superior seizure resistance under high-load conditions.

• Manufacturer Part Number: 6631M87
• Bore Size: 87mm
• Compression Height: 1.181
• Forged from 2618 aluminum for improved tensile strength
• ArmorGlide skirt coating for reduced friction and quieter operation
• Forced pin oiling for enhanced wrist pin lubrication and cooling
• Precision-machined crown and ring grooves with anti-detonation features
• Designed for maximum ring seal and durability in racing environments

The Wiseco Professional Series forged racing piston is engineered for high-performance Acura turbo builds where durability is non-negotiable. Machined in the USA from 2618 aluminum alloy, this piston provides the increased tensile strength required for heavy to severe duty applications. Each piston features Wiseco's proprietary ArmorGlide skirt coating to reduce friction, minimize noise, and provide superior seizure resistance under high-load conditions.

• Forged from 2618 aluminum alloy for maximum tensile strength in forced induction environments
• Specifications: 81.0mm bore and 1.181in compression height with a -12cc dish volume
• ArmorGlide skirt coating for reduced friction, seizure resistance, and quieter operation
• Forced pin oiling ensures critical lubrication at the wrist pin for enhanced reliability
• Precision-machined ring grooves and anti-detonation features for improved ring seal
• Includes premium rings designed for severe duty racing applications
• Manufacturer Part Number: 6541M81AP

Fits 2015+ Subaru WRX models equipped with the FA20F engine. This is a single replacement piston for use in specific engine build configurations requiring Grade B sizing.

This Manley Platinum Series piston is engineered for the high-stress environment of the FA20F engine. Manufactured from high-strength domestic 2618 alloy forgings, this piston utilizes a 10:1 dish profile and an 86mm standard bore. Manley employs a unique fixturing process that machines the skirt and ring grooves in a single operation, ensuring maximum squareness for superior ring seal and longevity. The cam and barrel skirt profiles are designed to minimize cylinder wall wear while maintaining stability under high cylinder pressures.

• Manufacturer Part Number: 632700CB-1
• Material: 2618 Forged Aluminum Alloy
• Bore: 86mm STD (Grade B)
• Compression Ratio: 10:1
• Wrist Pins: Included Premium Chrome Moly steel pins
• Construction: Precision-machined ring lands and grooves for enhanced sealing
• Design: Signature Platinum Series cam and barrel skirt profiles

Fits 2013+ Subaru BRZ models equipped with the FA20 engine.

This Manley Platinum Series single replacement piston (Grade B) is engineered for high-performance builds requiring extreme strength and precise tolerances. Machined from domestic 2618 aluminum alloy forgings, these pistons feature specific cam and barrel skirt profiles designed to maximize power while minimizing friction and wear on cylinder walls. Manley’s unique manufacturing process machines the skirt and ring grooves in a single operation, ensuring ultimate squareness for superior ring seal and longevity.

• Series: Platinum Series
• Bore Size: 86mm STD (Grade B)
• Compression Ratio: 10:1 Dish
• Material: Domestic 2618 Forged Aluminum Alloy
• Wrist Pin: Premium Chrome Moly tool steel
• Machining: Single-operation skirt turning and ring groove machining
• Manufacturer Part Number: 632600CB-1

Note: This is a single replacement piston. Grade B sizing is intended for specific factory block tolerances; please verify your cylinder bore measurements for proper clearance before installation.

Fits 2004-present Subaru WRX and STI models equipped with the EH257 engine.

This Manley Platinum Series single piston (Grade B) is engineered for high-performance engine builds and targeted repairs. Machined from high-strength domestic 2618 alloy forgings, these pistons are designed to withstand the extreme cylinder pressures of turbocharged EJ-series platforms. Each piston utilizes Manley’s unique fixturing process, which machines the skirt and ring grooves in a single operation to ensure the ring grooves remain perfectly square to the skirt for superior sealing and reduced blow-by.

• High-Strength Forging: Constructed from 2618 aluminum alloy for superior structural integrity under boost.
• Precision Skirt Profiles: Proven cam and barrel skirt profiles generate substantial power while remaining gentle on cylinder walls.
• Optimized Ring Seal: Exacting standards for ring lands and grooves enhance sealing efficiency for maximum power delivery.
• Wrist Pins: Includes premium Chrome Moly wrist pins as standard equipment.
• Technical Specs: 99.50mm bore, 8.5:1 compression ratio, Grade B sizing, dish top configuration.
• Part Number: 632200CB-1

This Manley Platinum Series single replacement piston is engineered for the 2004-2021 Subaru WRX STI equipped with the EJ257 engine. Designed for professional engine builders and high-performance applications, this piston features a 99.50mm Grade B bore and is intended for use with a standard 79mm stroke crankshaft.

Forged from high-strength domestic 2618 aluminum alloy, each piston utilizes Manley’s unique fixturing process. This allows for skirt turning and ring groove machining in a single operation, ensuring maximum squareness between the ring land and the skirt. The precision-machined cam and barrel skirt profiles are designed to generate substantial power while minimizing wear on the cylinder walls.

• Series: Platinum Series
• Bore Size: 99.50mm (Grade B)
• Stroke: 79mm (STD)
• Material: 2618 Forged Aluminum Alloy
• Wrist Pin: Premium Chrome Moly (included)
• Included Components: Single piston, piston rings, and wrist pin
• MPN: 612000CB-1