Fits 2006-2013 Mazda 3 Mazdaspeed and Mazda 6 Mazdaspeed models.

Wiseco Professional Series forged racing pistons are engineered for the high-cylinder pressures of serious competition builds. Machined in the USA from 2618 aluminum alloy, these pistons provide the increased tensile strength required for heavy to severe duty turbo applications. Each piston features a dished crown with a -13.3cc volume to maintain a 9.5:1 compression ratio, providing a robust foundation for increased boost levels.

This shelf stock kit incorporates Wiseco’s proprietary ArmorGlide skirt coating to reduce friction, minimize noise, and provide superior seizure resistance. The fully machined crowns include anti-detonation grooves and precision ring grooves to ensure a superior seal under load. Forged-in oiling features, including forced pin oiling, provide critical lubrication to the wrist pin to prevent galling during high-RPM operation.

• Forged from high-strength 2618 aluminum alloy
• ArmorGlide skirt coating for reduced friction and wear
• Precision-machined -13.3cc dished crown (9.5:1 CR)
• Forced pin oiling for improved wrist pin longevity
• Anti-detonation grooves to protect the ring land area
• Includes premium piston rings and high-quality wrist pins
• Manufacturer Part Number: K640M88

Fits 2008-2014 Mitsubishi Lancer Evolution GSR, MR, and MR Touring (4B11-T engine).

This Wiseco Professional Series piston kit is engineered for high-performance 4B11-T builds that demand extreme durability under severe duty conditions. Forged and machined in the USA from 2618 aluminum alloy, these pistons provide superior tensile strength and thermal stability compared to cast alternatives. The kit includes premium piston rings and features Wiseco's ArmorGlide skirt coating to reduce friction, minimize wear, and ensure quieter operation during thermal expansion.

• Manufacturer Part Number: K636M86
• Material: 2618 Forged Aluminum Alloy
• Crown Volume: -4.5cc
• ArmorGlide Skirt Coating: Reduces friction and resists seizure
• Forced Pin Oiling: Ensures critical lubrication to the wrist pin
• Precision-machined ring grooves and anti-detonation grooves for improved ring seal
• Includes high-quality piston rings, pins, and clips

Fits 2002-2006 Acura RSX Type-S and Honda K20 engines.

Wiseco Professional Series forged racing pistons are engineered for the serious engine builder and professional racer. Machined in the USA from 2618 forged aluminum alloy, these pistons offer the increased tensile strength necessary for high-RPM, severe-duty applications. This shelf stock kit features a +5cc dome volume to achieve an 11.0:1 compression ratio, optimizing combustion performance for the K20 platform.

• 2618 Forged Aluminum: High-strength alloy designed to withstand extreme cylinder pressures and thermal loads.
• ArmorGlide Skirt Coating: Permanent dry film lubricant reduces friction, minimizes skirt wear, and ensures quieter engine operation.
• Precision Machining: Features a fully machined crown, precision ring grooves, and anti-detonation grooves for superior ring seal.
• Forced Pin Oiling: Improves lubrication to the wrist pin and small-end bearing for increased longevity under high-load conditions.
• Complete Kit: Includes high-quality piston rings and necessary wrist pins for a full installation.
• Part Number: K634M88

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

The Wiseco Professional Series forged racing pistons are engineered for high-output K-series hybrid builds utilizing a K24 block with a K20 head. Machined from high-tensile 2618 aluminum in the USA, these pistons are designed for heavy to severe duty racing applications. This kit incorporates advanced features including ArmorGlide skirt coating to reduce friction and prevent seizure, along with forced pin oiling to ensure consistent lubrication under high-stress conditions.

• Manufacturer Part Number: K634M875
• Compression Ratio: 12.5:1
• Dome Volume: +5cc
• Material: 2618 Forged Aluminum for superior tensile strength
• ArmorGlide Skirt Coating: Reduces friction and noise while providing seizure resistance
• Precision-machined crown and anti-detonation grooves for improved ring seal
• Forced pin oiling for enhanced wrist pin lubrication
• Includes premium piston rings

Fits select 2002-2011 Acura RSX, TSX and Honda Accord, CR-V, and Element models utilizing a K24 block with a K20 head (K24/K20 hybrid builds). This Wiseco Professional Series shelf stock kit is engineered for high-compression, heavy-duty racing applications.

Forged from 2618 aluminum alloy for superior tensile strength and heat resistance, these pistons are designed to handle the increased cylinder pressures of a 12.5:1 compression ratio build. Each piston features Wiseco’s ArmorGlide skirt coating to reduce friction and prevent seizure, along with an anti-detonation groove to protect the ring land. The fully machined crown includes a +5cc dome specifically profiled for K-series head combustion chambers. For improved reliability at high RPM, the kit includes forced pin oiling to maintain a consistent oil film on the wrist pin.

• Manufacturer Part Number: K634M87
• Material: 2618 Forged Aluminum
• Compression Ratio: 12.5:1 (approximate, based on K24/K20 configuration)
• Dome Volume: +5cc
• ArmorGlide skirt coating for reduced friction and wear
• Precision-machined ring grooves and anti-detonation grooves
• Forced pin oiling for enhanced lubrication
• Includes premium rings, wrist pins, and circlips

Fits select 2002-2006 Acura RSX Type-S and Honda K20 engines.

Wiseco Professional Series forged racing pistons are engineered for the high-demand environment of performance K-series builds. Machined in the USA from 2618 aluminum alloy for superior tensile strength, these pistons are designed to withstand the stresses of heavy-duty racing and high-performance naturally aspirated applications. Each piston features a fully machined crown and an 11.0:1 compression ratio for optimized combustion efficiency.

To ensure longevity and performance, Wiseco utilizes ArmorGlide skirt coating to reduce friction and minimize cylinder wall wear. The inclusion of forced pin oiling and precision-machined ring grooves provides a superior ring seal and consistent lubrication under high-load conditions.

• Manufacturer Part Number: K634M865
• Bore Size: 86.5mm (.020 Oversize)
• Compression Ratio: 11.0:1
• Piston Design: Dome Dish
• Material: High-strength forged 2618 aluminum
• Coating: ArmorGlide skirt coating for friction reduction
• Features: Anti-detonation grooves and forced pin oiling
• Includes: Premium piston rings and wrist pins

Fits select 2002-2011 Acura RSX and TSX, and Honda Accord, CR-V, and Element (K20/K24).

The Wiseco Professional Series forged racing piston kit is engineered for serious builders and high-duty racing applications. Machined in the USA from high-tensile 2618 aluminum alloy, these flat top pistons provide the strength required for forced induction or high-compression K-series builds. Each piston features a 1.181-inch compression height and 87.5mm bore with precision-machined ring grooves for an optimal seal.

To ensure long-term reliability and performance, these pistons are finished with Wiseco's proprietary ArmorGlide skirt coating, which reduces friction and prevents seizure in extreme conditions. Integrated forced pin oiling and anti-detonation grooves help manage thermal loads and maintain ring integrity under severe duty.

• Material: Forged 2618 aluminum alloy
• Piston Type: Flat Top
• Bore Size: 87.5mm
• Compression Height: 1.181 in
• Skirt Coating: ArmorGlide friction reduction
• Features: Forced pin oiling, anti-detonation grooves, and fully machined crowns
• Included: Premium piston rings and forged pistons
• Manufacturer Part Number: K631M875

Fits select 2002-2011 Acura RSX, TSX and Honda Accord, CR-V, and Element (K20/K24 engines).

Wiseco Professional Series forged racing pistons are engineered for high-output engine builds and severe-duty racing applications. Machined in the USA from high-strength 2618 aluminum, these pistons feature a flat top design and are built to withstand the increased cylinder pressures of performance K-series builds. Each piston is treated with Wiseco’s proprietary ArmorGlide skirt coating to reduce friction, minimize noise, and provide superior seizure resistance during high-RPM operation.

• Material: Forged 2618 aluminum for maximum tensile strength.
• Bore Size: 87mm.
• Compression Height: 1.181in.
• ArmorGlide Skirt Coating: Reduces friction and protects against scuffing.
• Forced Pin Oiling: Enhances lubrication to the wrist pin for increased durability.
• Precision Machining: Features a fully machined crown and anti-detonation grooves to improve ring seal.
• MPN: K631M87.

Vehicle Fitment:

Fits 2002-2006 Acura RSX Type-S.

Wiseco Professional Series forged racing pistons are engineered for high-performance engine builders and racers who demand no-compromise durability. These pistons are precision-machined in the USA from 2618 aluminum alloy, providing the high tensile strength necessary for heavy to severe duty race applications. The flat-top design is optimized for K-series builds, ensuring structural integrity under high-stress combustion cycles.

• Forged from 2618 aluminum for superior strength and heat resistance
• ArmorGlide skirt coating reduces friction, resists seizure, and ensures quieter operation
• Precision ring grooves with anti-detonation features for a superior seal
• Forced pin oiling provides critical lubrication to the wrist pin at high RPM
• Fully machined crown features for optimized flame travel
• Includes premium piston rings and wrist pins
• Bore: 86.5mm
• Compression Height: 1.181in
• MPN: K631M865

Fits 2002-2006 Acura RSX Type-S.

Wiseco Professional Series forged racing piston kits are engineered for high-performance engine builders and serious racers who require custom-level features in a shelf-stock component. Each piston is forged and machined in the USA from 2618 aluminum alloy, providing the superior tensile strength necessary to withstand the extreme heat and combustion pressures of heavy-duty racing applications.

This kit features Wiseco's proprietary ArmorGlide skirt coating to reduce friction, prevent seizure, and ensure quieter operation. Precision-machined ring grooves, anti-detonation grooves, and forced pin oiling come standard, optimizing ring seal and wrist pin lubrication for maximum engine longevity and power consistency.

• Forged from 2618 aluminum for maximum tensile strength and durability
• ArmorGlide skirt coating for reduced friction and wear
• Precision-machined crown and ring grooves for optimal sealing
• Forced pin oiling ensures consistent wrist pin lubrication
• Includes premium rings, wrist pins, and clips
• Manufacturer Part Number: K631M86
• Bore Size: 86mm
• Compression Height: 1.181in
• Piston Head Shape: Flat Top

Fits 2003-2005 Mitsubishi Lancer Evolution 8 equipped with the 4G63 Turbo engine.

The Wiseco 1400 HD Professional Series forged piston kit is engineered for high-stress racing and severe-duty performance builds. Machined in the USA from 2618 aluminum alloy for exceptional tensile strength, these pistons are specifically designed to withstand the extreme cylinder pressures and temperatures of turbocharged 4G63 platforms. The 1400 HD series prioritizes structural integrity, making it a standard choice for engine builders requiring maximum reliability in high-horsepower applications.

• Forged from 2618 aluminum alloy for improved durability and heat resistance
• ArmorGlide skirt coating reduces friction, resists seizure, and ensures quieter operation
• Forced pin oiling ensures constant lubrication to the wrist pin and small end of the rod
• Precision-machined ring grooves and anti-detonation grooves for optimized ring seal
• Fully machined crowns with -21cc dish volume
• Includes premium piston rings and high-strength wrist pins
• Manufacturer Part Number: K627M86AP

Fits Mitsubishi Lancer Evolution 8 (4G63 Turbo).

Wiseco Professional Series 1400 HD forged racing pistons are engineered for high-horsepower builds requiring maximum durability. These pistons are forged and machined in the USA from high-tensile 2618 aluminum, specifically designed to withstand the extreme cylinder pressures of forced-induction 4G63 engines. Each piston features a -21cc dish and includes Wiseco's proprietary ArmorGlide skirt coating to minimize friction, reduce noise, and prevent seizure under heavy loads.

• Forged from high-strength 2618 aluminum alloy
• ArmorGlide skirt coating for reduced friction and improved wear resistance
• Forced pin oiling for superior wrist pin lubrication
• Anti-detonation grooves and precision-machined ring grooves for improved seal
• Fully machined crown for consistent volume and clearance
• Includes premium piston rings and hardware
• Manufacturer Part Number: K627M85AP

Fits Mitsubishi Lancer Evolution 8 models equipped with the 4G63 turbo engine.

Wiseco Professional Series 1400 HD forged pistons are engineered for high-horsepower, severe-duty racing applications. These pistons are machined in the USA from 2618 aluminum alloy, providing the high tensile strength required for extreme cylinder pressures and temperatures. Every kit features Wiseco’s ArmorGlide skirt coating to reduce friction, minimize wear, and ensure quieter operation during thermal expansion.

The 1400 HD line includes precision-machined crown features and forced pin oiling to ensure reliable lubrication at high RPM. Designed for builders who require a no-compromise rotating assembly, this kit comes complete with premium piston rings and high-strength pins.

• Forged from 2618 aluminum alloy for maximum durability
• ArmorGlide skirt coating for reduced friction and seizure resistance
• Forced pin oiling and anti-detonation grooves for improved ring seal
• Fully machined crowns with -14cc dish volume
• Bore Size: 86mm
• Manufacturer Part Number: K626M86AP

Fits Mitsubishi Evolution VIII models equipped with the 4G63 Turbo engine.

The Wiseco Professional Series 1400 HD forged piston kit is engineered for high-horsepower Mitsubishi 4G63 Turbo builds where reliability under extreme cylinder pressure is critical. Machined in the USA from 2618 aluminum alloy, these pistons offer superior tensile strength and heat resistance compared to standard castings, making them ideal for heavy-duty racing and high-boost applications.

• Material: Forged 2618 aluminum alloy for maximum durability in severe-duty environments.
• ArmorGlide Skirt Coating: Reduces friction and provides seizure resistance for quieter operation and extended skirt life.
• Forced Pin Oiling: Ensures consistent lubrication to the wrist pin to prevent galling under high mechanical loads.
• Anti-Detonation Grooves: Protects the top ring land by disrupting pressure waves and improves ring seal.
• Specifications: Features a fully machined crown with a -14cc dish volume.
• Manufacturer Part Number: K626M85AP

Each shelf stock kit includes premium piston rings and high-strength wrist pins specifically selected to handle the rigors of professional-level competition.

Fits Mitsubishi Lancer Evolution 8 with the 4G63 Turbo engine.

Wiseco 1400 HD Professional Series forged racing pistons are engineered for high-boost, high-horsepower Mitsubishi 4G63 builds that demand maximum reliability. Forged and machined in the USA from 2618 aluminum alloy, these pistons offer the improved tensile strength required for heavy to severe duty race applications. Each piston features Wiseco’s proprietary ArmorGlide skirt coating to reduce friction, minimize cylinder wear, and ensure quieter operation during cold starts.

• Manufactured from 2618 aluminum for superior strength in turbocharged environments
• -14cc dish volume designed for optimal compression in shelf stock kits
• ArmorGlide skirt coating provides friction reduction and seizure resistance
• Precision-machined ring grooves and anti-detonation grooves for enhanced ring seal
• Forced pin oiling ensures consistent wrist pin lubrication under load
• Fully machined crown features for precise combustion control
• Includes premium rings and high-strength wrist pins
• Manufacturer Part Number: K626M855AP

Fits Mitsubishi EVO 8 models equipped with the 4G63 Turbo engine.

Wiseco Professional Series 1400 HD forged racing pistons are engineered for extreme duty cycles and high-boost applications. Machined in the USA from high-tensile 2618 aluminum alloy, these pistons are designed to handle the intense cylinder pressures found in serious race builds. Each piston features ArmorGlide skirt coating to reduce friction, minimize operating noise, and prevent seizure under heavy thermal loads.

• Forged from 2618 aluminum for superior tensile strength and heat resistance
• ArmorGlide skirt coating reduces friction and improves wear life
• Forced pin oiling ensures consistent lubrication to the wrist pin
• Precision-machined ring grooves and anti-detonation grooves for optimized ring seal
• Fully machined crown for precise combustion control and weight reduction

• Bore Size: 85.25mm
• Compression Ratio: 8.5:1
• Dome/Dish Volume: -14cc
• Engine: Mitsubishi 4G63 Turbo
• Manufacturer Part Number: K626M8525AP

Fits 1997-1998 Honda CR-V EX and LX models.

Wiseco Professional Series forged pistons are engineered for high-stress racing applications and severe-duty engine builds. Machined in the USA from high-tensile 2618 aluminum, these flat-top pistons provide a 10.5:1 compression ratio, offering the strength and heat resistance required for performance use. Each kit includes premium rings and features Wiseco's proprietary ArmorGlide skirt coating to reduce friction, minimize wear, and ensure quieter operation.

• Manufacturer Part Number: K623M845
• Material: Forged 2618 Aluminum
• Piston Style: Flat Top
• Compression Ratio: 10.5:1
• Coating: ArmorGlide Skirt Coating for reduced friction and seizure resistance
• Features: Forced pin oiling, precision ring grooves, and anti-detonation grooves
• Included: Forged pistons and premium piston rings

Fits 1997-1998 Honda CR-V (EX / LX).

Wiseco Professional Series forged pistons are designed for serious engine builders and racers who require a no-compromise internal component for heavy to severe duty applications. Machined from 2618 forged aluminum for high tensile strength, these flat-top pistons are engineered to withstand the thermal and mechanical stresses of high-performance B-series builds. The 10.5:1 compression ratio provides an ideal balance for naturally aspirated performance or moderate boost applications.

Each piston in this kit features Wiseco's ArmorGlide skirt coating, which reduces friction, minimizes wear, and ensures quieter operation. This comprehensive shelf stock kit includes premium rings and features forced pin oiling to ensure the wrist pins remain lubricated under high RPM conditions.

• Forged from 2618 aluminum alloy for improved durability and heat resistance
• ArmorGlide skirt coating for seizure resistance and friction reduction
• Precision-machined crown and anti-detonation grooves for optimized combustion and ring seal
• Forced pin oiling for enhanced wrist pin lubrication
• Includes premium piston rings for a complete high-performance installation

• Manufacturer: Wiseco
• Series: Professional Series
• Part Number: K623M84
• Piston Style: Flat Top
• Compression Ratio: 10.5:1
• Material: 2618 Forged Aluminum

Fits select 2002-2011 Acura TSX and Honda Accord, CR-V, and Element models equipped with K24 blocks and K20 head conversions.

This Wiseco Professional Series Piston Kit is engineered specifically for high-performance "Frankenstein" builds mating the K24 engine block with K20 cylinder heads. Forged from 2618 aluminum alloy, these pistons provide the tensile strength required for severe-duty racing and high-boost applications. Each piston features a fully machined crown and forced pin oiling to ensure reliable lubrication at high RPMs.

To maximize efficiency and longevity, these pistons are finished with Wiseco's ArmorGlide skirt coating, which reduces friction and operating noise while providing superior seizure resistance. The design includes precision-machined ring grooves and anti-detonation grooves to maintain a superior ring seal under extreme combustion pressures.

• Bore Size: 87.5mm
• Dish Volume: -21cc
• Material: 2618 Forged Aluminum
• Coating: ArmorGlide Skirt Coating
• Features: Forced pin oiling and anti-detonation grooves
• Series: Professional Series Shelf Stock Kit
• Manufacturer Part Number: K622M875

Fits select 2002-2011 Acura TSX and Honda Accord, CR-V, and Element models utilizing a K24 engine block with K20 cylinder heads.

Wiseco Professional Series forged racing pistons are engineered for serious builders and high-duty race applications where durability is non-negotiable. Forged from 2618 aluminum for superior tensile strength and high-temperature resilience, these pistons are designed to handle the increased cylinder pressures of high-performance hybrid K-series builds. Each piston features Wiseco’s proprietary ArmorGlide skirt coating to reduce friction, minimize noise, and provide exceptional seizure resistance during extreme operation.

• Forged from 2618 aluminum alloy for maximum strength
• ArmorGlide skirt coating reduces friction and wear
• Precision-machined crown and ring grooves for optimal seal
• Anti-detonation grooves to protect the ring land
• Forced pin oiling for enhanced wrist pin lubrication
• Includes premium piston rings and pins

Technical Specifications:
Part Number: K622M87
Bore Size: 87mm
Dome/Dish Volume: -21cc
Material: 2618 Forged Aluminum

Fits 2002-2006 Mini Cooper S.

The Wiseco Professional Series forged piston kit is engineered for high-performance builds requiring superior tensile strength and thermal resistance. Machined in the USA from 2618 aluminum, these pistons are specifically designed to withstand the increased cylinder pressures of turbocharged and supercharged applications. Each piston features ArmorGlide skirt coating to minimize friction, reduce noise, and prevent seizure during high-stress operation.

• Forged from 2618 aluminum for maximum durability in severe-duty racing
• 8.5:1 compression ratio optimized for forced induction setups
• ArmorGlide skirt coating for reduced friction and improved wear resistance
• Precision-machined ring grooves with anti-detonation features for enhanced ring seal
• Forced pin oiling for improved lubrication and cooling at the wrist pin
• Includes premium piston rings and high-quality hardware
• Manufacturer Part Number: K618M775

Fits 2002-2006 Mini Cooper S models.

Engineered for high-boost and severe-duty racing applications, the Wiseco Professional Series forged piston kit (K618M77) is machined in the USA from 2618 aluminum to deliver the high tensile strength required for forced induction. These 77mm pistons feature an 8.5:1 compression ratio, providing the durability needed for professional-level engine builds and turbocharged environments.

Each piston is treated with Wiseco's proprietary ArmorGlide skirt coating to reduce friction, minimize cylinder wear, and ensure quieter operation. The kit includes precision-machined crown features, anti-detonation grooves for enhanced ring seal, and forced pin oiling to ensure reliable lubrication under high-load conditions.

• Material: 2618 forged aluminum for superior strength-to-weight ratio
• Bore Size: 77mm
• Compression Ratio: 8.5:1
• Coating: ArmorGlide skirt coating for friction reduction and seizure resistance
• Key Features: Forced pin oiling, anti-detonation grooves, and premium piston rings included
• Manufacturer Part Number: K618M77

Fitment:
2002-2006 Mini Cooper S

Fits Toyota 3SGTE 4-valve turbo engines.

The Wiseco Professional Series forged piston kit (K615M87AP) is engineered for high-boost, heavy-duty race builds where component reliability is critical. Forged and machined in the USA from 2618 aluminum alloy, these 87mm pistons provide the superior tensile strength and thermal stability required to withstand extreme cylinder pressures in turbocharged 3SGTE applications.

Each piston features Wiseco’s ArmorGlide skirt coating, a permanent lubricant that reduces friction, prevents seizure under high heat, and ensures quieter operation. The design incorporates forced pin oiling and an anti-detonation groove to maintain ring seal integrity and extend the service life of the wrist pins during competitive use.

• Engineered specifically for Toyota 3SGTE 4V Turbo engines
• Bore Diameter: 87.00mm
• Crown Volume: -6cc (Dished)
• Material: 2618 Forged Aluminum Alloy for high-load durability
• ArmorGlide Skirt Coating reduces friction and wear
• Forced pin oiling for enhanced wrist pin lubrication
• Precision-machined ring grooves and anti-detonation groove
• Includes premium rings for superior sealing
• Manufacturer Part Number: K615M87AP

Fits select 1993-2003 Ford Probe, Mazda 626, and Mazda Protege (2.0L FS Turbo).

Wiseco Professional Series forged pistons are engineered for high-performance builds where durability and thermal stability are critical. Machined from high-tensile 2618 aluminum, these pistons are purpose-built to withstand the increased cylinder pressures and heat generated by turbocharged FS-series engines. The -16.5cc dish volume allows for optimized compression ratios in forced induction applications, while the ArmorGlide skirt coating reduces friction and prevents scuffing for quieter, more reliable operation.

• Forged from 2618 aluminum for superior tensile strength and durability
• ArmorGlide skirt coating for reduced friction, seizure resistance, and quieter operation
• Precision-machined crown and ring grooves for maximum ring seal
• Forced pin oiling ensures consistent lubrication to the wrist pin
• Anti-detonation grooves help maintain ring integrity under heavy boost
• Includes premium piston rings for heavy-duty race use
• Manufacturer Part Number: K614M835

Fits select 1993-2003 Mazda 626, Protege Mazdaspeed, and Ford Probe models.

The Wiseco Professional Series forged piston kit (K614M83) is engineered for serious engine builders and racers utilizing the Mazda 2.0L FS engine platform. These pistons are machined in the USA from 2618 aluminum alloy to provide the high tensile strength required for heavy-duty turbo applications. Featuring a -16.5cc dish, these pistons are designed to manage compression in forced induction setups while maintaining structural integrity under high cylinder pressures.

• Forged from 2618 aluminum for superior strength and heat resistance
• ArmorGlide skirt coating reduces friction, resists seizure, and ensures quieter operation
• Precision-machined ring grooves with anti-detonation features for improved sealing
• Forced pin oiling for reliable lubrication at high RPMs
• Fully machined crowns with premium rings included
• Manufacturer Part Number: K614M83

Fits Subaru WRX and STI models with the EJ257 (4v) engine.

Wiseco Professional Series forged pistons are engineered for high-performance builds and severe-duty racing applications. Forged and machined in the USA from 2618 aluminum alloy, these pistons offer the high tensile strength required for forced induction EJ257 builds. Each piston features Wiseco's ArmorGlide skirt coating to reduce friction, minimize cylinder wear, and ensure quieter operation. This kit includes premium rings and is designed with forced pin oiling and precision-machined ring grooves to maintain a reliable seal under high boost and extreme thermal loads.

• Forged from 2618 aluminum for superior strength in high-horsepower applications
• ArmorGlide skirt coating reduces friction and prevents seizure
• Precision-machined crown and anti-detonation grooves improve ring seal and longevity
• Forced pin oiling for consistent wrist pin lubrication
• Includes premium piston rings and high-quality wrist pins

• Manufacturer Part Number: K598M9975AP
• Bore Size: 99.75mm
• Piston Volume: -19cc Dish
• Material: 2618 Forged Aluminum

Fits Subaru EJ257 engines found in WRX and STI models. This kit provides a professional-grade foundation for high-performance builds requiring the thermal stability and strength of forged 2618 aluminum.

The Wiseco Professional Series piston kit (MPN: K598M995AP) is engineered and machined in the USA to handle the rigors of severe-duty racing. These pistons feature a 99.5mm bore and a -19cc dish volume specifically optimized for the 4-valve EJ257 cylinder head. Each piston is treated with Wiseco’s proprietary ArmorGlide skirt coating to reduce friction, minimize wear, and provide quieter operation. The design incorporates forced pin oiling for enhanced lubrication at the wrist pin and anti-detonation grooves to maintain ring seal integrity under high-boost conditions.

• Forged from 2618 aluminum for maximum tensile strength and heat resistance
• 99.5mm bore size with -19cc dish volume
• ArmorGlide skirt coating for friction reduction and seizure resistance
• Forced pin oiling for superior wrist pin lubrication
• Precision-machined ring grooves and anti-detonation grooves
• Fully machined crown features for optimized combustion
• Kit includes premium rings and pins
• Manufacturer Part Number: K598M995AP

Fits select 1993-2006 Mitsubishi Eclipse, Lancer Evolution, Eagle Talon TSi, and Plymouth Laser RS (Turbo Models). This Wiseco Professional Series forged piston kit is engineered for high-performance builds where durability and thermal management are critical. Machined in the USA from 2618 aluminum, these pistons offer superior tensile strength for heavy to severe-duty applications.

Each piston features ArmorGlide skirt coating to minimize friction and prevent seizure during high-stress operation. The design includes forced pin oiling for improved lubrication at the wrist pin, along with an anti-detonation groove to protect the ring land. Precision-machined ring grooves ensure an optimal seal, maximizing compression and efficiency in forced induction setups.

• Manufacturer Part Number: K597M86
• Bore Size: 86.0mm
• Compression Height: 1.378 in
• Piston Volume: -10cc Dish
• Material: Forged 2618 Aluminum Alloy
• Skirt Coating: ArmorGlide for reduced friction and quieter operation
• Includes premium piston rings and forced pin oiling

Fits select 1993-2006 Mitsubishi Lancer Evolution and Eclipse, Eagle Talon, and Plymouth Laser models.

Wiseco Professional Series forged racing pistons are engineered for high-performance builds where strength and durability are non-negotiable. Forged and machined in the USA from 2618 aluminum alloy, these pistons offer superior tensile strength compared to standard forged alternatives, making them ideal for heavy to severe duty turbocharged race applications. This kit is designed to withstand the increased cylinder pressures and heat found in high-boost Mitsubishi-based platforms.

Every piston in this kit includes Wiseco's ArmorGlide skirt coating to reduce friction, provide seizure resistance, and ensure quieter operation. The fully machined crown features precision ring grooves and an anti-detonation groove to improve ring seal and protect the engine under extreme conditions. Forced pin oiling is included to ensure the wrist pin remains properly lubricated during high-RPM use.

• Forged from 2618 aluminum for maximum tensile strength
• ArmorGlide skirt coating for reduced friction and wear
• -10cc dish volume optimized for turbocharged applications
• Precision-machined 85.5mm bore and 1.378-inch compression height
• Includes premium rings and forced pin oiling
• Manufacturer Part Number: K597M855

Engineered for high-output Honda and Acura B-series 4-valve engines, the Wiseco Professional Series Piston Kit (K594M85AP) is built for serious racers and builders. These pistons are forged and precision-machined in the USA from 2618 aluminum alloy, providing the high tensile strength required for heavy to severe-duty racing applications where standard alloys might fail.

• Engine Fitment: Fits Honda/Acura B-Series 4-valve engines.
• Material: 2618 forged aluminum for maximum durability under high cylinder pressures.
• Bore & Dome: 85.00mm bore size with a +8.25cc dome volume for increased compression.
• ArmorGlide Skirt Coating: Provides permanent lubrication to reduce friction, resist seizure, and ensure quieter operation.
• Enhanced Oil Control: Features forced pin oiling and precision-machined ring grooves for superior seal and longevity.
• Strutted Forging: Designed with a strutted forging profile to handle high-RPM stress and heavy loads.
• Complete Kit: Includes high-performance pistons, premium ring sets, wrist pins, and clips.
• Manufacturer Part Number: K594M85AP