JE Pistons Forged Piston Kit for Hyundai Gamma 1.6T GDI 77mm 9.5:1 - 361285

Hyundai Gamma 1.6T GDI | 77mm Bore | 9.5:1 | -8.20cc Dish | Forged 2618 | Round Forging | 20mm Pins | Set of 4

Ready to rebuild your Hyundai Gamma 1.6T with internals designed for more demanding turbocharged performance? The JE Pistons Forged Piston Kit, part number 361285, offers a performance-oriented foundation for enthusiasts repairing a damaged engine, upgrading their turbocharger, or putting together a stronger street and track build. Manufactured in the USA from forged 2618 aluminum, these pistons are designed for the elevated combustion pressures that come with modified turbocharged engines.

This kit features a 77.00mm standard bore, 9.5:1 nominal compression ratio, and -8.20cc dished crown. Its round-forged construction is paired with JE's accumulator grooves, precision wrist pin fitting, and friction-reducing skirt coating. The result is a piston package focused on strength, consistent ring sealing, and wear control without requiring an oversized cylinder bore. With four pistons, JE Pro Seal rings, wrist pins, and retaining locks included, it provides the essential components for a carefully prepared 1.6L Gamma GDI short block.

Key Features & Specifications:

Kit Includes:

• 4 x JE Pistons Forged 2618 Aluminum Pistons

• JE Pro Seal Premium Piston Ring Set

• 4 x Case-Hardened 5115 Steel Wrist Pins

• Wrist Pin Retaining Locks

About the JE Pistons Hyundai Gamma 1.6T Forged Piston Kit

Built for a Stronger Turbocharged Gamma Engine

Hyundai's Gamma 1.6T is a compact turbocharged engine with plenty of appeal for enthusiasts who want responsive street performance and room for carefully planned upgrades.

When a build involves increased boost or more demanding driving conditions, the pistons need to match the rest of the engine's intended performance. JE's forged 2618 aluminum construction provides the strength and ductility needed for high-cylinder-pressure applications, making it a performance-focused alternative to factory-style internals.

This kit retains the standard 77.00mm bore, making it useful for engines whose cylinders can be properly prepared without being enlarged. The 9.5:1 nominal compression configuration provides a defined starting point for a turbocharged build using the intended Gamma GDI cylinder head and engine geometry.

Accumulator Grooves for Ring Control

Maintaining effective piston ring sealing is important in any performance engine, especially one operating under boost.

JE's accumulator grooves provide additional volume between the top and second compression rings. This helps reduce pressure buildup from combustion gases that pass the top ring, minimizing ring flutter and supporting consistent sealing during demanding operation.

Coated Skirts for Friction and Wear Reduction

The piston skirts receive JE's specialized coating to help reduce friction and wear against the cylinder walls.

The coating also helps limit operating noise, making it a useful feature for enthusiasts who are building a performance engine that will still see regular street driving.

Unlike some other JE piston designs, part 361285 uses a round forging rather than an FSR forging. It does not include thermal crown coating or lateral gas ports.

Precision Wrist Pin Fit and Complete Hardware

JE precision-hones the wrist pin bores to help establish controlled clearance between the pistons and their wrist pins.

JE identifies typical pin-to-bore clearances ranging from 0.0003 to 0.0010 inches, with final assembly measurements established by the engine builder.

The supplied case-hardened steel wrist pins, retaining locks, and JE Pro Seal piston rings complete the package, giving builders the primary piston components needed for a properly assembled Gamma 1.6T short block.

Whether you're repairing a damaged engine or preparing your Hyundai for more demanding turbocharged performance, JE Pistons 361285 offers a combination of forged construction, application-specific dimensions, accumulator grooves, and skirt coatings in a four-piston kit.

Fitment & Installation Notes:

• Hyundai Gamma 1.6L Turbo GDI: Designed for compatible Gamma GDI 1.6T engine configurations.

• Cylinder Head: Gamma GDI 1.6T.

• Engine Identification: Verify the exact engine code, cylinder head, and connecting rod configuration before ordering.

• Required Finished Bore: 77.00mm.

• Bore Configuration: Standard bore, not a +0.50mm oversize piston.

• Compression Ratio: Nominal 9.5:1 with the intended engine geometry. Actual assembled compression depends on combustion chamber volume, head gasket thickness, and deck clearance.

• Piston Configuration: -8.20cc dished crown with 1.099-inch compression height.

• Wrist Pin Diameter: 0.787 in., approximately 20mm.

• Connecting Rod Compatibility: Confirm the connecting rod small-end dimensions and wrist pin fit before assembly.

• Cylinder Preparation: Measure the pistons and finished bores to establish JE's specified piston-to-wall clearance.

• Piston Ring Installation: Measure and set ring end gaps for the intended fuel, boost pressure, and operating conditions.

• Piston-to-Valve Clearance: Verify clearance during assembly, particularly when using modified cylinder heads, camshafts, or valve timing components.

• Engine Tuning: Fuel delivery, ignition calibration, boost control, and ECU tuning must be appropriate for the completed engine build.

• Horsepower Rating: No fixed horsepower rating is specified for part 361285. Engine capability depends on the complete assembly, supporting components, and calibration.

For enthusiasts rebuilding or upgrading a Hyundai Gamma 1.6T GDI engine, JE Pistons 361285 combines forged 2618 aluminum construction, standard-bore fitment, accumulator grooves, and coated skirts in a performance-oriented four-cylinder piston package.