Honda Civic Sport K20Z2 Forged Overbore Piston Kit (86.5mm)

Upgrade your K20Z2 with this forged performance piston kit, built to 86.50mm for tuners who want more strength and a wider power band than stock pistons can handle.

Key Features

• Forged aluminum construction resists detonation and heat far better than a cast OEM piston
• Stronger crown and skirt design for tuned, boosted, or high-RPM naturally-aspirated builds
• Precision-machined ring lands for consistent sealing under sustained high load
• Oversized to 86.50mm — the right choice if your original bore is worn, scored, or has already been machined past standard size

Vehicle Fitment

• Honda Civic Sport (2006–2011)

Not 100% sure this is the right kit for your engine? Send us your engine or chassis number before ordering and we'll confirm fitment.

Technical Specifications

Shipping & Support (New Zealand)

Dispatched from our NZ-based sourcing team, with nationwide shipping and support available if you need help matching this kit to your build.

Note: Bore size should be confirmed against your block's actual measured bore before ordering. Professional installation and machining/measurement by a qualified engine builder is recommended.