Fits select 1991-1995 BMW 325is, 525i, and 525iT (2.5L M50B25).

Wiseco Professional Series forged racing pistons are engineered for the extreme demands of turbocharged BMW M50B25 builds. Forged from high-tensile 2618 aluminum alloy in the USA, these pistons feature an 84.50mm bore (+0.50mm oversized) and an 8.8:1 compression ratio optimized for forced induction. Every piston is treated with Wiseco's proprietary ArmorGlide skirt coating to reduce friction, eliminate seizure risk, and ensure quieter operation during cold starts and high-RPM runs.

• Precision Forged: Machined from 2618 aluminum for superior strength in high-heat, high-pressure environments.
• Advanced Lubrication: Forced pin oiling ensures constant lubrication to the wrist pin for extended component life.
• Optimized Sealing: Features precision-machined ring grooves and an anti-detonation groove to improve ring seal and protect the top land.
• ArmorGlide Coating: Permanent skirt lubricant reduces drag and provides a protective barrier against cylinder wall wear.
• Complete Set: Includes premium rings and high-quality hardware for a professional-grade installation.

Specifications:
Manufacturer Part Number: KE115M845
Bore Size: 84.50mm (+0.50mm Oversized)
Compression Ratio: 8.8:1
Material: 2618 Forged Aluminum

Fits 1991-1995 BMW 325is, 525i, and 525iT (2.5L M50B25).

Wiseco Professional Series forged pistons are engineered for high-performance BMW M50B25 turbo builds where durability under high cylinder pressure is required. Machined in the USA from 2618 forged aluminum, these pistons offer the high tensile strength needed for severe-duty forced induction applications. This kit features an 84.00mm standard bore and an 8.8:1 compression ratio, providing a boost-friendly geometry for the 24V 2.5L engine.

• Forged from 2618 aluminum alloy for superior strength-to-weight and heat resistance
• ArmorGlide skirt coating to reduce friction, minimize wear, and provide quieter operation
• Precision-machined ring grooves and anti-detonation grooves for improved seal and longevity
• Forced pin oiling ensures consistent lubrication for the wrist pin under load
• Complete set includes premium piston rings
• Specifications: 84.00mm Bore, 8.8:1 Compression Ratio
• Manufacturer Part Number: KE115M84

Fits Subaru FA20 Direct Injection engines (2.0L).

Wiseco Professional Series forged pistons are engineered for high-output Subaru FA20 builds where reliability under extreme cylinder pressures is non-negotiable. Forged and machined in the USA from 2618 aluminum alloy, these pistons provide the increased tensile strength required for heavy-duty racing and forced induction applications.

Each piston features Wiseco’s proprietary ArmorGlide skirt coating to reduce friction, prevent seizure, and ensure quieter operation. The design incorporates forced pin oiling and precision-machined crowns to optimize lubrication and combustion. This kit includes premium rings and is purpose-built to withstand the rigors of severe-duty performance environments.

• Material: 2618 Forged Aluminum Alloy
• Dish Volume: -9.5cc
• Bore Size: 86.00mm
• ArmorGlide skirt coating for friction reduction and seizure resistance
• Forced pin oiling for enhanced wrist pin lubrication
• Anti-detonation grooves to protect the top ring land and improve seal
• Fully machined crown for optimized combustion characteristics
• Manufacturer Part Number: K727M86

Fits 1997-2002 Mitsubishi Lancer with 4G93 and 4G94 engines (1.8L).

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, these pistons offer the superior tensile strength required to handle increased cylinder pressures and heat. Each piston features Wiseco’s ArmorGlide skirt coating, which reduces friction, minimizes noise, and provides excellent seizure resistance during initial break-in and extreme operation.

This kit includes precision-machined ring grooves and anti-detonation grooves to improve ring seal and protect the piston land under load. Forced pin oiling ensures the wrist pin receives constant lubrication, extending component life at high RPM. The set comes complete with premium rings to ensure a reliable seal for your build.

• Manufacturer Part Number: K683M82AP
• Material: 2618 Forged Aluminum
• Bore Size: 82.00mm (+.040")
• Compression Height: 1.190"
• Dome Volume: -2.5cc (Flat Top)
• Skirt Coating: ArmorGlide
• Engine Compatibility: 4G93 / 4G94 (1.8L)
• Includes: Professional Series pistons and premium ring set

Fits Toyota 2JZGTE (3.0L) engines.

Wiseco Professional Series forged racing pistons are engineered for high-horsepower engine builds and severe-duty racing applications. Forged and machined in the USA from 2618 aluminum alloy, these pistons provide the exceptional tensile strength required for forced-induction 2JZ platforms. This set features an asymmetric skirt design to optimize weight and reduce friction while maintaining structural integrity at high RPMs.

Every piston is treated with Wiseco's ArmorGlide skirt coating to provide seizure resistance and quieter operation. The fully machined crowns and anti-detonation grooves improve combustion efficiency and ring seal stability under heavy load.

• Bore Size: 86.5mm (+.5mm oversize)
• Compression Height: 33.98mm
• Material: Forged 2618 Aluminum
• ArmorGlide Skirt Coating: Reduces friction and wear
• Asymmetric Skirt: Optimized for weight and stability
• Forced Pin Oiling: Ensures consistent lubrication of the wrist pin
• Included Hardware: Premium piston rings and wrist pins
• Manufacturer Part Number: K678M865AP

Fits Toyota 2JZGTE engines (3.0L).

Wiseco Professional Series forged racing pistons are engineered for the extreme thermal and mechanical loads of high-horsepower 2JZGTE builds. Machined from high-strength 2618 aluminum alloy, these pistons provide the tensile strength required for high-boost and severe-duty racing applications. The asymmetric skirt design optimizes the piston profile to reduce reciprocating weight while maintaining a full-width skirt on the high-load thrust side for maximum stability.

This set features Wiseco’s proprietary ArmorGlide skirt coating, which reduces friction and operating noise while providing superior seizure resistance. Advanced machining includes forced pin oiling for improved lubrication and anti-detonation grooves to protect the ring land and enhance seal under high cylinder pressures.

• Manufacturer Part Number: K677M86AP
• Bore Size: 86mm (Standard)
• Material: 2618 Forged Aluminum
• Skirt Type: Asymmetric Skirt with ArmorGlide Coating
• Engine Application: Toyota 2JZGTE (3.0L)
• Included: Premium piston rings and wrist pins
• Key Features: Forced pin oiling and anti-detonation grooves

Fits Toyota 2JZGTE engines (3.0L).

Wiseco Professional Series forged racing pistons are engineered for high-output builds and severe-duty performance. Machined in the USA from 2618 aluminum alloy, these pistons provide the increased tensile strength and thermal resistance required for high-horsepower and forced-induction applications. The asymmetric skirt design reduces weight and friction while maintaining critical stability during the power stroke.

This set features Wiseco's ArmorGlide skirt coating to minimize friction, reduce seizure risk, and ensure quieter operation. Precision-machined crowns, anti-detonation grooves, and forced pin oiling systems come standard to ensure maximum ring seal and component longevity under extreme stress.

• Bore Diameter: 86.5mm (+.5mm oversize)
• Material: Forged 2618 aluminum alloy
• Skirt Type: Asymmetric skirt with ArmorGlide coating
• Key Features: Forced pin oiling and fully machined crowns
• Includes premium ring set and wrist pins
• Designed for heavy to severe duty race builds
• Manufacturer Part Number: K677M865AP

Fits Toyota 2JZGTE engines (3.0L).

Engineered for high-boost and high-RPM racing applications, the Wiseco Professional Series forged piston set provides the strength and precision required for severe-duty engine builds. These pistons are machined from 2618 aluminum alloy for superior tensile strength and resistance to detonation. This 86.25mm (+.25mm oversize) set utilizes an asymmetric skirt design, which reduces overall weight and friction while maintaining a wide skirt on the major thrust side for maximum stability.

• Manufacturer Part Number: K677M8625AP
• Material: Forged 2618 Aluminum
• Bore Size: 86.25mm (+.25mm Oversize)
• ArmorGlide Skirt Coating: Reduces friction, noise, and cylinder wall wear
• Asymmetric Skirt Profile: Optimizes weight and thrust-side strength
• Features precision-machined ring grooves and anti-detonation grooves for superior ring seal
• Forced pin oiling ensures reliable lubrication of the wrist pin under load
• Includes premium piston rings for a complete professional installation

Fits 1993-2001 Honda Civic Si (B16A engine).

Wiseco Professional Series forged racing pistons are engineered for the demands of high-output race builds and heavy-duty performance. Precision-machined in the USA from 2618 aluminum alloy, these pistons provide the increased tensile strength required for high-RPM and high-pressure environments. This 81.0mm standard-size kit incorporates ArmorGlide skirt coating to significantly reduce friction, minimize operating noise, and protect against seizure under extreme thermal loads.

Note: Installation of this kit requires the use of a .040" thickness head gasket.

• Forged from 2618 aluminum for maximum durability and strength
• ArmorGlide skirt coating reduces friction and improves cylinder wall life
• Precision-machined ring grooves and anti-detonation grooves for superior ring seal
• Forced pin oiling ensures consistent lubrication to the wrist pin
• Fully machined crown features for optimized combustion
• Includes premium piston rings and wrist pins
• Manufacturer Part Number: K673M81AP

Wiseco Professional Series forged pistons are engineered for high-output race builds where durability and thermal stability are paramount. Precision-machined in the USA from high-tensile 2618 aluminum alloy, these pistons are designed to withstand the rigors of heavy to severe duty performance applications. This kit features Wiseco's proprietary ArmorGlide skirt coating to reduce friction, minimize cylinder wear, and ensure quieter operation. Note: This specific shelf stock kit is designed for use with a .040-inch head gasket.

• Forged from high-strength 2618 aluminum alloy for improved tensile strength
• 81.5mm bore and 1.181-inch compression height
• ArmorGlide skirt coating reduces friction and improves seizure resistance
• Precision-machined ring grooves with anti-detonation features for improved ring seal
• Forced pin oiling for enhanced wrist pin lubrication at high RPM
• Includes premium piston rings and high-quality wrist pins
• Manufacturer Part Number: K673M815AP

Engineered for high-performance Mitsubishi "Frankenstein" engine builds, this Wiseco Professional Series Piston Kit is designed specifically for 4G64 blocks utilizing 4G63 cylinder heads. These forged pistons are built for heavy to severe duty racing applications, offering the durability required for high-compression E85 setups.

Each piston is machined in the USA from 2618 forged aluminum alloy for superior tensile strength under extreme thermal and mechanical loads. The set features ArmorGlide skirt coating to reduce friction, minimize noise, and provide seizure resistance. Integrated forced pin oiling and anti-detonation grooves ensure reliable performance and ring seal longevity in demanding race environments.

• Application: Mitsubishi 4G64 block with 4G63 cylinder head
• Compression Ratio: 10.5:1
• Material: 2618 Forged Aluminum
• Finish: ArmorGlide Skirt Coating
• Technical Features: Precision ring grooves, anti-detonation grooves, and forced pin oiling
• Includes: Piston set and premium piston rings
• Manufacturer Part Number: K656M85AP

Designed for high-output Mitsubishi 4G64 blocks utilizing 4G63 cylinder heads, this Wiseco Professional Series piston kit is engineered for the rigors of heavy-duty racing. These forged pistons feature a 10.5:1 compression ratio specifically optimized for E85 fuel, providing the structural integrity needed for high-cylinder-pressure environments.

Each piston is machined in the USA from 2618 aluminum alloy for superior tensile strength compared to standard alloys. The skirts are treated with Wiseco's proprietary ArmorGlide coating to reduce friction, minimize wear, and ensure quieter operation. The kit includes precision-machined ring grooves and forced pin oiling to maintain lubrication under extreme loads.

• Application: Mitsubishi 4G64 block with 4G63 cylinder head (Hybrid/Frankenstein builds)
• Material: Forged 2618 Aluminum Alloy
• Compression Ratio: 10.5:1 (Optimized for E85)
• ArmorGlide skirt coating for reduced friction and seizure resistance
• Forced pin oiling and anti-detonation grooves for improved durability
• Includes premium rings and high-strength wrist pins
• Manufacturer Part Number: K656M855AP

Fits 2010-2013 Hyundai Genesis Coupe (2.0T).

Wiseco Professional Series forged racing pistons are engineered for high-output 4B11-T builds that demand extreme durability. Machined from high-tensile 2618 aluminum alloy, these pistons feature a spherical dish design to optimize combustion efficiency under heavy boost. Each piston is treated with Wiseco's proprietary ArmorGlide skirt coating to reduce friction, minimize cylinder wear, and ensure quieter operation during cold starts.

Built to handle severe-duty racing environments, this shelf-stock kit includes premium rings and features forced pin oiling to maintain lubrication at high RPMs. Precision-machined ring grooves and integrated anti-detonation grooves improve ring seal and protect the lands from pressure spikes, making these a critical upgrade for any serious Hyundai 2.0T build.

• Forged from 2618 aluminum for superior strength and heat resistance
• ArmorGlide skirt coating for reduced friction and seizure resistance
• Forced pin oiling for enhanced wrist pin lubrication
• Precision-machined crown and anti-detonation grooves
• Includes premium piston rings
• Manufacturer Part Number: K651M865

Fits 2010-2013 Hyundai Genesis Coupe (2.0T).

Wiseco Professional Series forged racing pistons are engineered for high-performance builds requiring exceptional durability and thermal stability. CNC-machined in the USA from 2618 aluminum alloy, these pistons provide the high tensile strength necessary to handle increased cylinder pressures in forced induction 4B11-T engines. Each piston in this shelf stock kit features a spherical dish crown designed to optimize combustion efficiency.

• Forged from 2618 aluminum alloy for superior strength-to-weight ratio
• ArmorGlide skirt coating for reduced friction, quieter operation, and scuff resistance
• Forced pin oiling and anti-detonation grooves for improved reliability under load
• Precision-machined ring grooves for enhanced ring seal
• Includes premium piston rings and high-quality wrist pins
• Manufacturer Part Number: K651M86

Designed for high-output Honda K-Series builds, the Wiseco Professional Series forged piston kit (K650M88AP) is engineered for serious racers and professional engine builders. These pistons are forged and machined in the USA from high-tensile 2618 aluminum alloy, specifically selected to withstand the extreme cylinder pressures and heat of heavy to severe-duty racing applications.

Each piston features Wiseco's proprietary ArmorGlide skirt coating to reduce friction and prevent seizure, alongside forced pin oiling for improved lubrication at high RPMs. The +10.5cc dome design is paired with fully machined crowns and precision-cut ring grooves to ensure a superior seal and maximum durability under load.

• Fits Honda K-Series engines
• Forged from 2618 aluminum for maximum tensile strength
• Bore: 88.0mm | Compression Height: 1.181in | Dome Volume: +10.5cc
• ArmorGlide skirt coating for reduced friction and quieter operation
• Anti-detonation and precision ring grooves for optimized ring seal
• Forced pin oiling and fully machined crowns
• Includes premium piston rings and hardware
• Manufacturer Part Number: K650M88AP

Engineered for high-output Honda K-Series race builds, these Wiseco Professional Series forged pistons are designed for builders who demand maximum thermal stability and tensile strength. Machined in the USA from premium 2618 aluminum alloy, this shelf stock kit is purpose-built to withstand the extreme cylinder pressures of heavy to severe-duty performance applications.

Each piston features Wiseco’s proprietary ArmorGlide skirt coating, which reduces friction and provides superior seizure resistance for quieter, more reliable operation. The fully machined crowns incorporate anti-detonation grooves to protect the ring land while forced pin oiling ensures the wrist pins remain lubricated under high-load conditions.

• Engine Fitment: Honda K-Series
• Material: Forged 2618 Aluminum Alloy
• Bore Diameter: 86.5mm
• Compression Height: 1.181"
• Dome Volume: +10.5cc
• Skirt Coating: ArmorGlide
• Hardware Included: Premium rings and wrist pins
• Manufacturer Part Number: K650M865AP

Fits select 2008-2014 Nissan 370Z and Infiniti G37 equipped with the VQ37 engine.

Wiseco Professional Series forged racing pistons are engineered for serious builders and high-performance racing applications. Machined in the USA from high-tensile 2618 aluminum, these pistons are designed to withstand the thermal and mechanical stresses of heavy-duty use. This kit features a -15.5cc reverse dome design to achieve a 9:1 compression ratio, making it an excellent choice for forced induction VQ37 builds. The integrated ArmorGlide skirt coating reduces friction and noise while improving seizure resistance for long-term durability.

• Manufacturer Part Number: K643M96
• Material: 2618 Forged Aluminum
• Compression Height: 1.198 inches
• Piston Volume: -15.5cc Reverse Dome
• Compression Ratio: 9:1
• Skirt Coating: ArmorGlide friction-reduction technology
• Oiling: Forced pin oiling for superior wrist pin lubrication
• Additional Features: Precision ring grooves and anti-detonation grooves for improved ring seal

Each kit includes Wiseco Professional Series pistons and premium ring sets designed for severe-duty performance.

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