Wiseco K556M87AP -12cc Forged Piston Kit (87 mm) for Nissan SR20 DE/DET

Vehicle Fitment

• Nissan SR-series 2.0L 16V (SR20DE / SR20DET)
• Commonly used in S13 / S14 / S15 180SX, 200SX, Silvia, etc.

Features

• Forged 2618-aluminum construction for high strength
• ArmorGlide® / ArmorPlating on skirts to reduce friction and resist seizure
• -12.00 cc "dish" design lowers compression - ideal for turbo or high-boost setups
• Fully machined piston crown with precision ring grooves
• Anti-detonation groove for improved combustion stability
• Forced-pin oiling for enhanced lubrication under high load
• Comes with a full ring set, wrist pins, and locks for a complete rebuild
• Built for performance and high-rev / severe duty applications

Specifications

• Bore Diameter: **87.00 mm**
• Compression Height: **32.00 mm**
• Piston Dish Volume: **-12.00 cc**
• Wrist Pin Diameter: **22 mm (0.866 in)**
• Material: Forged 2618 aluminum
• Included Ring Set: **8700XX**
• Typical Compression Ratio: ~9.1:1
• Approx. Piston Weight: ~345 g per piece

Included Components

• 4x forged pistons
• 4x Wrist pins
• 4x Circlip locks
• 4x Full ring sets (top, 2nd, oil)
• Installation / specification guide

Product Description

The Wiseco K556M87AP is a high-performance forged piston kit tailored for Nissan's SR-series 2.0 L engines (both SR20DE & SR20DET). The -12cc dish design reduces compression, making it especially well-suited for boosted applications or engines tuned for high-stress performance.

Constructed from aerospace-grade 2618 aluminum, these pistons are built to endure high RPM and severe-duty conditions. The ArmorPlating (or ArmorGlide) coating on the skirts minimizes friction and improves longevity, while the forced-pin oiling system ensures robust lubrication under load.

This kit comes complete with everything needed for a full rebuild - pistons, rings, wrist pins, and locks - making it a turnkey solution for performance builds. Ideal for drift, track, or street-focused SR20 engine projects, the K556M87AP offers serious reliability and strength.