Fits 2002-2006 Mini Cooper S.

Wiseco GNH Series 4-stroke piston ring sets are engineered to provide maximum sealing and oil control for high-performance applications. Developed and tested for race-ready performance, these rings are manufactured to Wiseco's precise specifications to ensure optimal compatibility with their 4-stroke pistons. Because ring performance is critical to engine efficiency, the GNH series focuses on maintaining superior compression and oil management to prevent blow-by and power loss.

• Manufacturer Part Number: 7700XX
• Bore Diameter: 77.0mm
• Series: GNH Ring Shelf Stock
• Application: 4-Stroke High-Performance Engines
• Engineered for optimal compression, sealing, and oil control

Fits select 1997-2004 Chevrolet Camaro, Corvette and Pontiac Firebird, GTO.

Wiseco 4072GFX 4-stroke piston ring sets are precision-engineered to provide critical sealing and oil control for high-performance applications. Developed to Wiseco's exacting specifications, these rings ensure maximum compression and race-ready durability when paired with Wiseco shelf stock pistons. Whether rebuilding for the street or preparing for the track, these rings deliver the tight tolerances and material quality required for consistent power delivery.

• Bore Size: 103.429mm (4.072")
• Set Configuration: 1-Cylinder
• Engineered for superior compression sealing and oil management
• Designed for compatibility with Wiseco 4-stroke pistons
• Manufacturer Part Number: 4072GFX

Fits select 1958-2004 Chevrolet models including Bel Air, Camaro, Corvette, Impala, Blazer, and C/K Series trucks.

This Wiseco GFX Series piston ring set is precision-engineered to meet the high-performance demands of 4-stroke engines. Sized for a 102.41mm (4.032in) bore, this single-cylinder shelf-stock set provides the ultimate sealing and oil control required to maximize piston efficiency. Developed and tested for race-ready performance, these rings ensure consistent compression and reduced friction for long-term durability in various Chevrolet engine applications.

• Bore Size: 102.41mm (4.032in)
• Cylinder Count: 1-Cylinder set
• Engine Type: 4-Stroke
• Series: GFX / Shelf Stock
• Manufacturer Part Number: 4032GFX

Fits select 1999-2012 Subaru Forester, Impreza, and Legacy models.

Wiseco 4-stroke piston ring sets are engineered to exact tolerances to ensure ultimate performance and a precision seal with Wiseco shelf-stock pistons. These rings manage critical engine functions including compression sealing and oil control, providing the durability required for high-performance and race-ready applications. The top ring is manufactured from Steel Moly to withstand high thermal loads while maintaining structural integrity.

• Bore Diameter: 100.0mm
• Top Ring Thickness: 1.2mm
• Second Ring Thickness: 1.5mm
• Oil Ring Thickness: 2.0mm
• Top Ring Material: Steel Moly
• Application: 4-Stroke Piston Systems
• Manufacturer Part Number: 10000VF

Ensure a superior combustion seal and long-term durability with these Supertech high-performance piston rings. Engineered for 89.5mm bore applications, these rings feature a gas-nitrided surface treatment that significantly increases surface hardness and wear resistance while reducing friction against the cylinder wall. These characteristics are essential for high-RPM and forced induction builds where thermal loads and cylinder pressures are elevated.

• Precision-engineered for 89.5mm bore engines
• Gas-nitrided finish for enhanced surface hardness and reduced friction
• Designed to maintain consistent tension under high thermal loads
• Compatible with high-performance and racing piston sets

Specifications:

• Bore Size: 89.5mm
• Top Ring: 1.0mm x 3.30mm
• Second Ring: 1.2mm x 3.70mm
• Oil Ring: 2.8mm x 3.30mm
• Material: Gas Nitrided Steel
• Manufacturer Part Number: R89.5-GNH8950

Supertech high-performance piston rings are engineered for maximum sealing and long-term durability in demanding engine environments. This 89mm bore ring set features a gas nitrided surface treatment, which significantly increases surface hardness and provides excellent wear resistance while reducing friction against the cylinder wall.

• Bore Diameter: 89mm
• Top Ring: 1.0mm height x 3.30mm radial width
• Second Ring: 1.2mm height x 3.70mm radial width
• Oil Ring: 2.8mm height x 3.30mm radial width
• Surface Treatment: Gas Nitrided for enhanced hardness and friction reduction
• Part Number: R89-GNH8900

Designed to withstand the extreme thermal and mechanical loads of performance builds, these rings ensure consistent compression and precise oil control. The gas nitriding process provides a hard, wear-resistant layer that helps prevent scuffing and extends the service life of both the rings and the cylinder bores.

Ensure a superior cylinder seal and reduced friction with this Supertech Gas Nitrided Piston Ring Set (MPN: R88-GNH8800). Engineered for 88mm bore performance applications, these rings are designed to withstand the extreme combustion pressures and thermal loads of built engines. The gas nitriding process creates a high-hardness surface that significantly improves wear resistance and longevity compared to traditional chrome or phosphate coatings.

• Bore Size: 88mm
• Top Ring Thickness: 1.0mm x 3.30mm
• Second Ring Thickness: 1.2mm x 3.60mm
• Oil Ring Thickness: 2.8mm x 3.30mm
• Material: High-performance steel with Gas Nitrided finish
• Manufacturer Part Number: R88-GNH8800

Engineered for high-performance builds, the Supertech Gas Nitrided Piston Ring set provides superior cylinder sealing and durability under extreme thermal and mechanical loads. These 87.5mm bore rings undergo a gas nitriding process that significantly increases surface hardness, reducing friction and extending the service life of both the rings and the cylinder walls.

This specific set is precision-machined to exacting tolerances, ensuring consistent oil control and compression retention in demanding racing or high-boost applications. The multi-stage ring pack is designed to replace worn components or complete a custom engine build where reliability is the priority.

• Bore Size: 87.5mm
• Top Ring Dimensions: 1.0mm x 3.30mm
• Second Ring Dimensions: 1.2mm x 3.60mm
• Oil Ring Dimensions: 2.8mm x 3.30mm
• Material Finish: High-performance gas nitrided
• Manufacturer Part Number: R87.5-GNH8750

Ensure a superior combustion seal and long-term durability with this Supertech high-performance piston ring set. Designed for 87mm bore applications, these rings utilize a gas nitrided finish to provide an exceptionally hard surface that resists wear, reduces friction, and handles the high cylinder pressures of forced induction or high-compression engine builds.

This ring set is engineered with specific radial depths to ensure proper tension and seating within the piston lands, optimizing oil control and minimizing blow-by for consistent power delivery across the RPM range.

• Bore Diameter: 87mm
• Top Ring: 1.0mm x 3.30mm
• Second Ring: 1.2mm x 3.60mm
• Oil Ring: 2.8mm x 3.30mm
• Material Process: Gas Nitrided
• Manufacturer Part Number: R87-GNH8700

Maintain optimal cylinder sealing and engine longevity with this Supertech high-performance piston ring set. Specifically engineered for engines with an 86.5mm bore, these rings are subjected to a gas nitriding process that creates a hardened, low-friction surface capable of withstanding the extreme temperatures and pressures of forced induction or high-RPM operation.

• Manufacturer Part Number: R86.5-GNH8650
• Bore Diameter: 86.5mm
• Top Ring Dimensions: 1.0mm x 3.30mm
• Second Ring Dimensions: 1.2mm x 3.60mm
• Oil Ring Dimensions: 2.8mm x 3.10mm
• Finish: Gas Nitrided for superior wear resistance and thermal stability

The specialized coating reduces drag against the cylinder wall while ensuring a consistent seal to maximize compression and minimize oil consumption in demanding performance applications.

This Supertech high-performance piston ring set is engineered for 86mm bore engines requiring superior heat resistance and reduced friction. Each ring undergoes a gas nitriding process to provide a hard, wear-resistant surface that maintains tension under extreme cylinder pressures and high temperatures.

Designed for precision sealing and optimal oil control, this set is ideal for forced induction or high-RPM naturally aspirated builds. The gas nitrided finish ensures faster break-in periods and extended service life compared to traditional chrome or phosphate coatings, making it a critical upgrade for any performance bottom-end build.

• Bore Size: 86.00mm
• Top Ring: 1.0mm x 3.10mm
• Second Ring: 1.2mm x 3.50mm
• Oil Ring: 2.8mm x 3.10mm
• Material: Gas Nitrided Steel
• Manufacturer Part Number: R86-GNH8600

Ensure superior combustion sealing and reduced friction in your high-performance engine build with this Supertech 85mm bore piston ring set. These rings utilize a gas nitrided surface treatment, creating an extremely hard, wear-resistant finish capable of withstanding the high temperatures and cylinder pressures found in forced induction or high-compression naturally aspirated applications.

• Bore Diameter: 85.00mm
• Top Ring: 1.0mm height x 3.10mm radial width
• Second Ring: 1.2mm height x 3.5mm radial width
• Oil Ring: 2.8mm height x 3.10mm radial width
• Material: High-strength steel with gas nitrided finish
• Manufacturer Part Number: R85-GNH8500

The gas nitriding process provides a lower coefficient of friction than traditional chrome or moly coatings, facilitating faster break-in and extended service life for both the rings and the cylinder walls.

Engineered for high-performance builds, this Supertech 84mm bore piston ring set provides the durability and sealing precision required for high-RPM and forced induction applications. The rings feature a gas nitrided finish, which creates a high-hardness surface that significantly reduces friction, improves wear resistance, and maintains tension under extreme thermal loads.

• Bore Diameter: 84.00mm
• Top Ring: 1.00mm height x 3.10mm radial width
• Second Ring: 1.20mm height x 3.50mm radial width
• Oil Ring: 2.80mm height x 3.10mm radial width
• Material: Gas nitrided steel for superior surface hardness
• MPN: R84-GNH8400

These rings are designed to be used with performance pistons matching these specific groove dimensions, ensuring optimal oil control and compression sealing in demanding engine environments.

Ensure reliable compression sealing and superior oil control with this Supertech high-performance piston ring set. Specifically engineered for an 82mm bore, these rings are finished with a gas nitrided surface treatment. This process increases surface hardness and significantly improves wear resistance, making them a preferred choice for high-heat, high-RPM, or forced induction applications where standard rings might lose tension or experience accelerated wear.

• Bore Diameter: 82.00mm
• Top Ring Dimensions: 1.0mm thickness x 3.10mm radial width (Gas Nitrided)
• Second Ring Dimensions: 1.2mm thickness x 3.40mm radial width
• Oil Ring Dimensions: 2.8mm thickness x 3.10mm radial width
• Finish: High-performance gas nitrided coating for reduced friction and scuff resistance
• Part Number: R82-GNH8200

The precision-ground radial widths and thicknesses ensure a tight fit within the piston lands, preventing micro-welding and maintaining a consistent seal under extreme combustion pressures.

Supertech high-performance piston rings are engineered for demanding engine builds that require superior sealing under extreme cylinder pressures. This ring set features a gas nitrided finish, providing an exceptionally hard surface that reduces friction and increases wear resistance for extended service life in turbocharged, supercharged, or high-compression naturally aspirated applications.

• Bore Diameter: 81.5mm
• Top Ring: 1.0mm x 3.10mm
• Second Ring: 1.2mm x 3.40mm
• Oil Ring: 2.8mm x 3.10mm
• Finish: High-performance gas nitrided coating
• Part Number: R81.5-GNH8150

Designed for precise fitment and optimal oil control, these rings help minimize blow-by and maintain consistent compression. Ensure cylinder walls are honed to the proper finish according to manufacturer specifications to facilitate correct ring seating.

Engineered for high-stress racing and street applications, these Supertech 81mm High Performance Piston Rings provide the superior sealing and oil control required for forced induction or high-RPM engine builds. The gas nitrided surface treatment significantly increases surface hardness and wear resistance, reducing friction while preventing ring land galling under extreme cylinder pressures.

This ring set is precision-machined to exact tolerances, ensuring consistent radial tension and optimal heat transfer from the piston crown to the cylinder wall. These rings are designed to satisfy the demands of professional engine builders looking for long-term durability and reliable compression under load.

• Bore Diameter: 81mm
• Top Ring: 1.0mm x 3.10mm (Gas Nitrided)
• Second Ring: 1.2mm x 3.40mm
• Oil Ring: 2.8mm x 3.10mm
• Finish: Gas Nitrided for reduced friction and high heat resistance
• Manufacturer Part Number: R81-GNH8100

This Supertech High Performance Piston Ring Set is engineered for 79mm bore applications that demand superior thermal stability and wear resistance. These rings are gas nitrided to provide an exceptionally hard surface finish, reducing friction and extending service life in high-load combustion environments.

Designed for precise oil control and compression sealing, this set features a multi-stage ring pack to maintain cylinder integrity under extreme conditions. The gas nitriding process ensures the rings can withstand the high temperatures and pressures common in built performance engines.

• Bore Diameter: 79mm
• Top Ring Dimensions: 1.0mm x 2.9mm
• Second Ring Dimensions: 1.2mm x 3.40mm
• Oil Ring Dimensions: 2.8mm x 3.10mm
• Material: Gas Nitrided Steel for enhanced durability
• Manufacturer Part Number: R79-GNH7900

This Supertech high-performance piston ring set is engineered for 78.5mm bore engines requiring precise ring-to-groove clearances and superior thermal stability. Each ring undergoes a gas nitriding process to increase surface hardness and provide a low-friction finish that significantly reduces cylinder wall wear under high-load conditions.

Designed for professional engine builders and performance applications, these rings ensure a reliable combustion seal and efficient oil control. The gas nitrided treatment allows for faster break-in periods and improved heat resistance compared to traditional chrome or moly coatings.

• Bore Diameter: 78.5mm
• Top Ring Dimensions: 1.0mm x 3.10mm
• Second Ring Dimensions: 1.2mm x 3.40mm
• Oil Ring Dimensions: 2.8mm x 3.10mm
• Material Treatment: Gas Nitrided
• Manufacturer Part Number: R78.5-GNH7850

Engineered for high-performance applications, this Supertech piston ring set is designed for engines with a 77.5mm bore. These rings feature a gas nitrided finish, providing an exceptionally hard, wear-resistant surface that reduces friction and maintains a superior cylinder seal under extreme thermal and mechanical loads.

This specific ring pack is optimized for precise oil control and compression retention in demanding environments, making it an ideal choice for high-RPM or forced induction builds. The gas nitriding process ensures the rings can withstand the rigors of racing while extending the service life of both the rings and the cylinder walls.

• Bore Size: 77.5mm
• Top Ring: 1.0mm x 3.1mm
• Second Ring: 1.2mm x 3.40mm
• Oil Ring: 2.8mm x 3.10mm
• Finish: High Performance Gas Nitrided
• MPN: R77.5-GNH7750

Fits 2004-2012 Subaru Impreza WRX STI, WRX STI Limited, and WRX STI Special Edition (EJ257).

This Manley Performance Piston Ring Set is engineered specifically for Subaru EJ257 engines featuring a 99.75mm bore (+.25mm oversized). These rings are designed to provide the precise combustion seal and oil control necessary for high-performance turbocharged boxer engine builds. This conventional ring set utilizes high-grade materials to ensure durability under extreme thermal and mechanical loads.

• Bore Diameter: 99.75mm (+.25mm Oversize)
• Ring Dimensions: 1.2mm x 1.2mm x 2.0mm
• Top Ring: High-performance ductile iron with plasma-moly inlay for heat resistance
• Second Ring: Reverse twist taper face or Napier-style for superior oil scraping
• Oil Ring: 3-piece design for consistent lubrication control
• Designed for compatibility with Manley Performance pistons
• Manufacturer Part Number: 46997-4

Fits 2004-2011 Subaru Impreza WRX STI, WRX STI Limited, and WRX STI Special Edition.

This Manley Performance Sport Compact series standard piston ring set is engineered to provide a reliable, high-integrity seal for your engine build. Specifically designed for 99.5mm bore applications, these rings utilize advanced materials to withstand the thermal and mechanical demands of performance driving. The conventional set configuration features a ductile iron top ring with a plasma-moly inlay for superior wear resistance and friction reduction.

• Bore Size: 99.5mm
• Top Ring: 1.2mm Ductile Iron with Plasma-Moly Inlay
• Second Ring: 1.2mm Reverse Twist Cast Iron Taper Face or Napier Style
• Oil Ring: 2.0mm 3-Piece Design
• Construction: High-performance materials designed for durability and optimal oil control
• Manufacturer Part Number: 46995-4

Ensure a precise, durable seal for your engine build with this Manley 87.5mm File Fit Piston Ring Set (MPN 46875-4). These rings are engineered for high-performance applications, allowing builders to file the ring ends for custom gaps that accommodate specific thermal expansion requirements. The set features high-performance ductile iron top rings with a plasma-moly inlay for superior wear resistance and cylinder wall lubrication.

This conventional set utilizes reverse twist cast iron taper face or Napier-style second rings to optimize oil control and compression sealing. The 3-piece oil ring assembly provides standard 7-11lb tension, making it a versatile choice for various engine configurations. Manley's meticulous tolerances ensure compatibility and consistent performance across heavy-duty engine builds.

• Bore Size: 87.5mm
• Ring Thickness: 1.2mm (Top), 1.2mm (Second), 2.8mm (Oil)
• Top Ring Material: Ductile Iron with Plasma-Moly Inlay
• Oil Ring Tension: Standard (7-11 lbs)
• Configuration: File Fit for custom gapping
• Manufacturer Part Number: 46875-4

Fits select 1993-2006 Eagle, Honda, Mitsubishi, and Plymouth vehicles, including Honda CR-V (K24/K20 Hybrid), Mitsubishi Lancer Evolution, and Mitsubishi Eclipse.

These Manley Performance piston ring sets are engineered to provide a superior seal and long-term durability for high-performance engine builds. Designed for an 87mm bore, this set is a staple for builders looking to optimize compression and oil control in Honda K-series "Frankenstein" builds (K24A block with K20A/A2/A3 heads) and Mitsubishi 4G63-based platforms. These conventional sets utilize premium materials and specific geometries to handle the stresses of spirited driving and motorsport applications.

• Top Rings: High-performance ductile iron construction with a plasma-moly inlay for heat resistance and rapid seating.
• Second Rings: Napier-style or reverse twist taper face design to provide superior oil scraping and minimize blow-by.
• Oil Rings: 3-piece assembly designed for consistent tension and efficient lubrication of the cylinder walls.
• Bore Size: 87mm
• Part Number: 46870-4

Fits select 1993-2014 Eagle Talon, Hyundai Genesis Coupe, and Mitsubishi Eclipse, Galant, and Lancer Evolution models (2.0T).

This Manley Performance piston ring set is engineered for high-performance engine builds requiring a durable and reliable seal. These conventional sets feature ductile iron top rings with a plasma-moly inlay to withstand high heat and pressure, paired with reverse twist cast iron taper face or Napier-style second rings for superior oil control. Each kit includes a three-piece oil ring assembly to ensure consistent lubrication and optimal cylinder wall contact.

• Manufacturer Part Number: 46865-4
• Bore Size: 86.5mm
• Top Ring Width: 1.2mm
• Second Ring Width: 1.2mm
• Oil Ring Width: 2.8mm
• Top Ring Material: Ductile Iron with Plasma-Moly Inlay
• Second Ring Style: Napier or Reverse Twist
• Set Type: Three-piece oil ring configuration

Fits select 1990-2014 Acura RSX, Eagle Talon, Honda Civic, Hyundai Genesis Coupe, Mitsubishi Eclipse, Mitsubishi Lancer Evolution, and Plymouth Laser (2.0T).

Manley Performance piston ring sets are meticulously engineered to provide a reliable, high-strength seal for performance engine builds. This set (MPN 46860-4) is designed to withstand the increased cylinder pressures of high-horsepower and forced induction applications, ensuring optimal compression and superior oil control.

• Engineered for precise fitment and optimized heat transfer between the piston and cylinder wall.
• Features high-performance ductile iron top rings with a plasma-moly inlay for a durable, long-lasting seal.
• Includes Napier-style second rings for enhanced oil scraping and superior crankcase pressure management.
• Ideal for both conventional engine refreshes and high-stress turbocharged or nitrous applications.
• Includes a three-piece oil ring assembly for maximum lubrication control.
• Manufacturer Part Number: 46860-4

Whether you are rebuilding a K-series or a 4G63, Manley rings deliver the exact tolerances required for professional-grade engine assembly and long-term reliability.

Fits select 1990-2006 Mitsubishi Eclipse and Lancer Evolution, Eagle Talon, and Plymouth Laser (4G63/4G63T).

Maintain a reliable cylinder seal and optimal compression with the Manley Performance Standard Piston Ring Set. Engineered for the 4G63 and 4G63T engine platforms, these conventional-style sets provide the durability required for performance rebuilds. These rings are designed to drop into standard bore applications, offering a precise fit and long-lasting oil control.

• Manufacturer Part Number: 46855-4
• Top Ring: High-performance ductile iron with a plasma-moly inlay for reduced friction and heat resistance
• Second Ring: Reverse twist cast iron taper face or Napier style for efficient oil scraping
• Oil Ring: Three-piece assembly designed for superior oil management
• Compatibility: Engineered for standard bore 4G63 and 4G63T engine blocks

Fits select 1996-2008 Ford Mustang, F-150, F-250/F-350 Super Duty, and GT (4.6L / 5.4L) engines. This set of Manley Performance ductile iron top rings is engineered for Ford Modular SOHC and DOHC (2-valve and 4-valve) applications requiring a 3.582in bore.

These conventional-style top rings feature a plasma-moly inlay to ensure a reliable seal and excellent heat resistance under high-performance conditions. Designed for engine builders who require precise tolerances and proven materials, these rings are an essential component for refreshing or upgrading 4.6L and 5.4L powerplants.

• Bore Size: 3.582in
• Material: Ductile Iron with Plasma-Moly Inlay
• Engine Compatibility: Ford 4.6L / 5.4L SOHC and DOHC
• Quantity: Set of 8 rings
• Manufacturer Part Number: 46630-8

Fits select 1996-2008 Ford F-150, F-250/F-350 Super Duty, Mustang, and GT (V8).

Manley Performance piston rings are engineered to provide a precise, durable seal for high-performance engine builds. This set features high-performance ductile iron top rings with a plasma-moly inlay to ensure excellent heat resistance and reduced friction under load. To optimize oil control, the set includes Napier-style or reverse twist cast iron taper face second rings and a standard 3-piece oil ring assembly. These components are meticulously manufactured to meet the tolerances required for reliable engine operation and longevity.

• Manufacturer Part Number: 46620-8
• Top Ring Material: Ductile Iron with Plasma-Moly Inlay
• Second Ring Design: Napier-Style
• Oil Ring Construction: 3-Piece Assembly
• Engine Compatibility: Ford V8 applications
• Designed for superior cylinder wall sealing and oil management

Fits select 1996-2008 Ford Mustang, GT, F-150, and F-Series Super Duty models (4.6L / 5.4L).

Engineered for high-stress Ford Modular engine builds, this Manley 46600-8 piston ring set is specifically designed for use with Manley piston part number 594100C-8. These rings provide the precise sealing surface required to maintain compression and manage oil in both 2-valve SOHC and high-performance 4-valve DOHC configurations. Built to withstand the rigors of high-output environments, this set is a critical component for ensuring long-term engine durability and performance.

• Specifically matched for use with Manley Piston P/N: 594100C-8.
• Premium Steel top rings are ideal for high-horsepower, forced induction, or nitrous applications.
• Standard Napier-style second rings provide superior oil scraping and cylinder wall control.
• Conventional sets feature high-performance ductile iron top rings with plasma-moly inlay.
• Includes 3-piece oil rings for consistent lubrication management.
• Manufacturer Part Number: 46600-8

Fits select 1996-2006 Jeep Cherokee, Grand Cherokee, and Wrangler (4.0L).

Mahle piston rings are engineered to meet strict OE requirements, offering a precision-engineered solution for engine rebuilds and maintenance. Designed specifically for the Jeep 4.0L 242 L6 engine, this plain ring set (MPN 51870CP) focuses on reducing internal friction and ring mass to optimize performance and efficiency.

By maintaining a consistent seal within the cylinder, these rings help minimize engine oil consumption and ensure a long service life. Mahle utilizes advanced ring technology to deliver components that manage heat effectively and resist wear under the demanding conditions of Jeep powerplants.

• Engineered to reduce internal friction for improved engine efficiency
• Optimized ring mass designed to minimize oil consumption
• Precision-manufactured to meet or exceed OE technical requirements
• Direct replacement for 1996-2006 Jeep 4.0L 242 L6 applications
• Manufacturer Part Number: 51870CP