Wiseco K556M86AP -12cc Forged Piston Kit (86.00 mm) for Nissan SR20 (DE/DET)

Vehicle Fitment

• Nissan SR-series 2.0L engines: SR20DE, SR20DET
• Common in Nissan 180SX, Silvia S13/S14/S15, 200SX, etc.

Features

• Forged 2618-aluminum construction for high strength
• ArmorGlide® skirt coating to reduce friction and resist scuffing
• -12.00 cc "dish" design lowers compression for turbo / high-boost setups
• Fully machined crown with precision ring grooves
• Anti-detonation groove design for better combustion stability
• Forced-pin oiling for improved lubrication under high load
• Includes high-performance ring set, wrist pins, and locks
• Built for serious racing or street performance tuning

Specifications

• Bore Diameter: **86.00 mm**
• Compression Height: **32.00 mm**
• Piston Dish Volume: **-12.00 cc**
• Wrist Pin Diameter: **22 mm (0.866 in)**
• Material: Forged 2618 aluminum
• Ring Set: **8600XX** included
• Approx. Piston Weight: ~328 g per piece
• Compression Ratio: ~9.0 : 1 (for SR20DE / DET builds)

Included Components

• 4x Forged pistons
• 4x Wrist pins
• 4x Circlip (locks)
• 4x Full ring sets (top, second, oil)
• Installation/specification guide sheet

Product Description

The Wiseco K556M86AP is a performance-focused forged piston kit specifically designed for the Nissan SR20 2.0L engine family - whether naturally aspirated (SR20DE) or turbocharged (SR20DET). With an 86.00 mm bore and -12 cc dish profile, these pistons help lower compression, making them especially useful for boosted or high-stress builds.

Built from 2618 aerospace-grade forged aluminum, this kit delivers excellent tensile strength and durability under severe-duty conditions. The ArmorGlide® coating on the skirts reduces friction and improves seizure resistance, while the forced-pin oiling system enhances reliability during high-RPM or high-load operation.

As a complete rebuild solution, the K556M86AP comes with forged pistons, wrist pins, locks, and ring sets - giving you everything you need to refresh or upgrade your SR20 engine for serious performance tuning, whether for drift, track, or street-turbo applications.