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 1987-1992 Toyota Supra Turbo (7MGTE).

Engineered for high-performance forced induction builds, the Wiseco Professional Series forged piston kit (K613M835) provides the strength and durability required for heavy-duty 7MGTE racing applications. These pistons are machined in the USA from 2618 aluminum alloy, offering superior tensile strength and heat resistance compared to factory cast components. Featuring a -16cc dish profile and an 83.5mm bore, this kit is designed specifically for turbocharged setups where combustion stability and ring seal are critical under high cylinder pressures.

• Forged from 2618 aluminum alloy for maximum structural integrity under boost
• ArmorGlide skirt coating reduces friction and helps prevent seizure for quieter operation
• Forced pin oiling ensures consistent lubrication at high RPM
• Anti-detonation grooves and precision-machined ring grooves improve ring life and seal
• Fully machined crown features for optimized combustion geometry
• Includes premium rings and necessary hardware
• Manufacturer Part Number: K613M835

Fits select 2003-2006 Nissan 350Z, Altima, Maxima, and Infiniti G35 (VQ35).

Wiseco Professional Series forged pistons (K606M96) are engineered for high-performance builds where strength and reliability are critical. Machined in the USA from 2618 aluminum alloy, these pistons provide the high tensile strength required for severe-duty racing and high-RPM environments. The +7cc domed crown design and 96mm bore are optimized for VQ35 engine builders seeking custom-level durability.

• Material: Forged from high-strength 2618 aluminum for maximum durability.
• ArmorGlide Skirt Coating: Reduces friction and scuffing for quieter operation and longer piston life.
• Advanced Oiling: Features forced pin oiling to ensure constant lubrication and cooling at the wrist pin.
• Sealing: Precision-machined ring grooves and anti-detonation grooves for improved ring seal and performance.
• Included: Complete shelf stock kit includes premium rings.

Vehicle Fitment

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

Fits Honda B-Series engines with 4-valve heads and an 84.00mm bore.

Designed for severe-duty race builds, this Wiseco Professional Series piston kit is engineered for engines that demand no-compromise durability. Forged and machined in the USA from 2618 aluminum alloy, these pistons provide the high tensile strength necessary for high-boost or high-compression environments. The strutted forging design minimizes weight while maximizing structural integrity under extreme loads.

• Manufacturer Part Number: K594M84AP
• Material: Forged 2618 aluminum for improved tensile strength
• Bore Diameter: 84.00mm
• Dome Volume: +8.25cc
• Coating: ArmorGlide skirt coating for reduced friction and seizure resistance
• Pin Oiling: Forced pin oiling for improved lubrication and cooler operation
• Grooves: Precision ring grooves and anti-detonation grooves for superior ring seal
• Includes: Premium ring set, wrist pins, and locks

Designed for high-output race builds, the Wiseco Professional Series Piston Kit for Honda and Acura B-Series 4-valve engines provides the durability required for severe-duty applications. These pistons are forged and precision-machined in the USA from 2618 aluminum alloy, offering the superior tensile strength necessary for high-compression or forced-induction environments. This kit features a strutted forging for increased rigidity and a +8.25cc dome volume to optimize performance.

• Forged from 2618 aluminum for maximum strength under high cylinder pressures
• ArmorGlide skirt coating reduces friction, resists seizure, and ensures quieter operation
• Precision-machined ring grooves and anti-detonation grooves for superior ring seal
• Fully machined crown with forced pin oiling for enhanced wrist pin lubrication
• Includes premium piston rings and high-strength wrist pins
• Manufacturer Part Number: K594M845AP

Wiseco Professional Series forged racing pistons are engineered for high-output Honda and Acura B-Series 4-valve engines. Machined in the USA from 2618 aluminum alloy, these pistons provide the increased tensile strength and fatigue resistance required for heavy to severe duty racing applications.

• 2618 Forged Aluminum: High-strength alloy designed to withstand the thermal and mechanical loads of forced induction and high-compression builds.
• ArmorGlide Skirt Coating: Specialized coating reduces friction and improves seizure resistance for quieter operation and extended bore life.
• Precision Machining: Features a fully machined crown, anti-detonation grooves, and precision ring grooves for an optimized combustion seal.
• Enhanced Lubrication: Forced pin oiling ensures the wrist pin receives constant lubrication under high RPM conditions.
• Kit Specifics: Strutted skirt design with a +8.25cc dome volume and 82.00mm bore.
• Included: Professional Series pistons and premium ring set.

Manufacturer Part Number: K593M82AP

Engineered for high-output Honda B-Series 4-valve engines, the Wiseco Professional Series Forged Piston Kit is designed for severe-duty racing applications. These pistons are forged from 2618 aluminum alloy to provide superior tensile strength and durability under high-stress conditions. Each piston features Wiseco’s ArmorGlide skirt coating to reduce friction, minimize noise, and provide exceptional seizure resistance during extreme operation.

• Material: Forged from high-strength 2618 aluminum alloy for maximum durability.
• ArmorGlide Skirt Coating: Reduces friction and wear while ensuring quieter operation.
• Precision Machining: Features fully machined crowns and forced pin oiling for improved lubrication.
• Enhanced Sealing: Precision-cut ring grooves with an anti-detonation groove to improve ring seal and protect the top land.
• Specifications: 81.00mm bore with a +8.25cc dome volume and strutted forging design.
• MPN: K593M81AP
• Included: Complete set with premium rings and wrist pins.

Engineered for high-boost racing applications, the Wiseco Professional Series Piston Kit for Nissan Turbo engines provides the strength and reliability required for severe-duty builds. These pistons are forged and precision-machined in the USA from 2618 aluminum alloy to ensure superior tensile strength under extreme combustion pressures.

This kit features Wiseco’s proprietary ArmorGlide skirt coating to reduce friction and prevent seizure while providing quieter operation. The design includes precision-machined ring grooves, an anti-detonation groove, and forced pin oiling to maintain lubrication and ring seal integrity during high-RPM use.

• Manufacturer Part Number: K591M865AP
• Bore Size: 86.5mm
• Dome Volume: +14cc
• Compression Height: 1.181in
• Material: Forged 2618 Aluminum
• Coating: ArmorGlide Skirt Coating
• Features: Forced pin oiling, anti-detonation grooves, and fully machined crowns

Each kit includes premium rings designed for high-load environments, making them a direct choice for professional engine builders and serious racers.

Engineered for high-output Nissan Turbo builds, the Wiseco Professional Series forged piston kit is designed for builders who require maximum strength in heavy to severe-duty racing environments. These pistons are forged and machined in the USA from high-tensile 2618 aluminum alloy to withstand the thermal and mechanical stresses of high-boost applications.

Each piston features ArmorGlide skirt coating to reduce friction and noise while preventing seizure under extreme loads. The design incorporates precision-machined ring grooves with an anti-detonation groove to improve ring seal and longevity. Forced pin oiling ensures the wrist pins remain lubricated during high-RPM operation, preventing premature wear.

• Fits Nissan Turbo engines
• Bore Size: 86.5mm
• Dome Volume: +14cc
• Compression Height: 1.181 in
• Material: 2618 Forged Aluminum
• Coating: ArmorGlide Skirt Coating
• Features: Forced pin oiling and fully machined crowns
• Includes: Premium piston rings
• Manufacturer Part Number: K591M865

Fits 1994-2005 Mazda Miata and 1999-2000 Mazda Protege (1.8L).

Engineered for high-performance builds and severe-duty racing, this Wiseco Professional Series forged piston kit provides the strength and precision required by serious engine builders. These pistons are machined from 2618 aluminum alloy to offer superior tensile strength under extreme combustion pressures. Each piston features Wiseco’s proprietary ArmorGlide skirt coating to reduce friction, minimize skirt wear, and ensure quieter operation during thermal expansion.

This shelf-stock kit includes premium piston rings and features forced pin oiling for improved lubrication at high RPMs. The precision-machined crowns and anti-detonation grooves are specifically designed to optimize ring seal and protect against the rigors of competitive use.

• Manufacturer Part Number: K590M84
• Bore Size: 84.0mm
• Compression Ratio: 10.5:1
• Material: Forged 2618 Aluminum
• Coating: ArmorGlide Skirt Coating
• Key Features: Forced pin oiling, anti-detonation grooves, and fully machined crowns
• Included: Forged pistons, premium ring set, and wrist pins

Fits 1994-2005 Mazda Miata and 1999-2000 Mazda Protege (1.8L).

Wiseco Professional Series forged racing pistons are engineered for high-performance builds requiring extreme durability. Machined in the USA from 2618 aluminum alloy for superior tensile strength, these pistons are designed to handle the increased heat and cylinder pressures of severe-duty racing. Each piston features Wiseco’s proprietary ArmorGlide skirt coating to reduce friction, minimize wear, and ensure quieter operation during startup and high-load cycles.

This kit includes precision-machined ring grooves and an anti-detonation groove to improve ring seal and protect the crown from combustion pressure spikes. Forced pin oiling ensures the wrist pins remain lubricated under high RPMs, extending the life of the rotating assembly in professional-grade builds.

• Manufacturer Part Number: K590M835
• Bore Size: 83.5mm
• Compression Ratio: 10.5:1
• Material: 2618 Forged Aluminum
• Coating: ArmorGlide Skirt Coating
• Features: Forced pin oiling, fully machined crown, and precision ring grooves
• Included: Premium rings and wrist pins

Engineered for high-performance Subaru WRX engine builds, the Wiseco Professional Series Forged Piston Kit delivers the structural integrity required for heavy to severe duty racing applications. These pistons are forged and machined in the USA from high-tensile 2618 aluminum alloy, providing the superior temperature resistance and strength necessary for high-boost forced induction environments.

This kit features a 4v R/Dome design and 92mm bore to achieve an 8.4:1 compression ratio. To ensure long-term reliability under extreme cylinder pressures, Wiseco includes precision-machined anti-detonation grooves and forced pin oiling for consistent wrist pin lubrication. The piston skirts are treated with ArmorGlide coating to reduce friction and mechanical noise while preventing scuffing during high-load operation.

• Part Number: K588M92AP
• Bore Size: 92mm
• Compression Ratio: 8.4:1
• Material: 2618 Forged Aluminum
• Coating: ArmorGlide Skirt Coating
• Design: 4v R/Dome with fully machined crowns
• Includes: Premium piston rings and wrist pins

Designed for high-output competition and severe-duty racing, the Wiseco Professional Series Piston Kit fits Subaru WRX 4V engines. These pistons are precision-machined from 2618 aluminum alloy to ensure high tensile strength and durability under the extreme cylinder pressures of turbocharged applications. Featuring a 92.5mm bore and an 8.4:1 compression ratio, this kit (MPN K588M925AP) provides a robust foundation for serious performance builds.

• Forged from 2618 aluminum for superior strength and heat resistance
• ArmorGlide skirt coating reduces friction and minimizes cylinder wear for quieter operation
• Forced pin oiling ensures consistent lubrication to the wrist pin
• Anti-detonation grooves help maintain ring seal and protect the ring land under high boost
• Fully machined crown features for optimized combustion efficiency
• Includes premium rings for a precision seal

Fits 1995-1998 Nissan 240SX with KA24 engines.

Wiseco Professional Series forged racing pistons (MPN: K587M90) are engineered for high-output builds where durability is non-negotiable. Forged from 2618 aluminum alloy, these pistons provide the high-tensile strength required for heavy to severe-duty performance applications. Each piston features Wiseco’s ArmorGlide skirt coating to reduce friction, minimize operating noise, and prevent seizure under extreme thermal loads.

This kit is precision-machined in the USA, featuring forced pin oiling and anti-detonation grooves to ensure superior ring seal and component longevity. The fully machined crowns and specific dished profile are designed to achieve a 10.5:1 compression ratio at a 90.0mm bore size.

• Forged from 2618 aluminum for maximum strength
• ArmorGlide skirt coating reduces friction and improves wear resistance
• Precision-machined ring grooves and anti-detonation grooves
• Forced pin oiling for enhanced wrist pin lubrication
• Includes premium rings for a complete installation
• Bore: 90.0mm | Compression Ratio: 10.5:1